课程： 14.6 答复-Ch 6:具有多面性和功能的操作

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选择节答复 - Ch 6: 带有多面和函数的操作

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答复 - Ch 6: 带有多面和函数的操作
Section 6.2 Polynomial Functions
::第6.2节多元函数

Review
::回顾

Standard form: $\begin{aligned} x^{2} + 3 x^{\frac{1}{2}} + 3 \end{aligned}$ ; degree: 2; lead term: $\begin{aligned} x^{2} \end{aligned}$ ; lead coefficient: 1; constant term: 3.
::标准窗体: x2+3x12+3; 度: 2; 铅值: x2; 铅系数: 1; 恒定值: 3。

Standard form: $\begin{aligned} \frac{1}{3} x^{2} y - 9 y^{2} - 4 \end{aligned}$ ; degree: 2; lead term: $\begin{aligned} \frac{1}{3} x^{2} y \end{aligned}$ ; lead coefficient: $\begin{aligned} \frac{1}{3} \end{aligned}$ ; constant term: -4.
::标准表: 13x2y-9y2-4; 度: 2; 铅期: 13x2y; 铅系数: 13; 恒定期: - 4。

Standard form: $\begin{aligned} 3 x^{- 3} \end{aligned}$ ; degree: -3; lead term: $\begin{aligned} 3 x^{- 3} \end{aligned}$ ; lead coefficient: 3; constant term: 0.
::标准表: 3x-3; 度: -3; 铅值: 3x-3; 铅系数: 3; 恒定值: 0。

Standard form: $\begin{aligned} \frac{2}{3} t^{2} - t^{- 2} \end{aligned}$ ; degree: 2; lead term: $\begin{aligned} \frac{2}{3} t^{2} \end{aligned}$ ; lead coefficient: $\begin{aligned} \frac{1}{3} \end{aligned}$ ; constant term: 0.
::标准表:23t2-t-2;度:2;铅期:23t2;铅系数:13;恒定期:0。

Standard form: $\begin{aligned} - 2 x + x^{\frac{1}{2}} - 1; \end{aligned}$ degree: 1; lead term: $\begin{aligned} - 2 x \end{aligned}$ ; lead coefficient: -1; constant term: -1.
::标准窗体: -2x+x12-1; 度:1; 牵头条件: -2x; 牵头系数: -1; 恒定条件: -1。

Standard form: $\begin{aligned} x^{3} + 5 \end{aligned}$ ; degree: 3; lead term: $\begin{aligned} x^{3} \end{aligned}$ ; lead coefficient: 1; constant term: 5.
::标准表: x3+5; 度: 3; 铅值: x3; 铅系数: 1; 恒定值: 5。

Standard form: $\begin{aligned} - 2 x + 3 \end{aligned}$ ; degree: 1; lead term: $\begin{aligned} - 2 x \end{aligned}$ ; lead coefficient: -2; constant term: 3.
::标准窗体: - 2x+3; 度: 1; 牵头条件: - 2x; 牵头系数: - 2; 恒定条件: 3。

Standard form: $\begin{aligned} x + x^{- 2} + 5 \end{aligned}$ ; degree: 1; lead term: $\begin{aligned} x \end{aligned}$ ; lead coefficient: 1; constant term: 5.
::标准表: x+x-2+5; 度:1; 铅值: x; 铅系数:1; 恒定值: 5。

Standard form: $\begin{aligned} 8 x^{4} + x^{3} + 14 x^{2} - 15 x - 20 \end{aligned}$ ; degree: 4; lead term: $\begin{aligned} 8 x^{4} \end{aligned}$ ; lead coefficient: 8; constant term: -20.
::标准表: 8x4+x3+14x2-15x-20; 度: 4; 铅期: 8x4; 铅系数: 8; 恒定期: - 20。

Standard form: $\begin{aligned} x^{3} + 8 \end{aligned}$ ; degree: 3; lead term: $\begin{aligned} x^{3} \end{aligned}$ ; lead coefficient: 1; constant term: 8.
::标准表: x3+8; 度: 3; 铅值: x3; 铅系数: 1; 恒定值: 8。

Standard form: $\begin{aligned} 9 x^{- 1} + 5 x^{- 2} + 16 \end{aligned}$ ; degree: -1; lead term: $\begin{aligned} 9 x^{- 1} \end{aligned}$ ; lead coefficient: 9; constant term: 16.
::标准表: 9x-1+5x-2+16; 度: -1; 铅期: 9x-1; 铅系数: 9; 恒定期: 16。

Standard form: $\begin{aligned} \sqrt{2} x^{2} - \sqrt{6} x + 10 \end{aligned}$ ; degree: 2; lead term: $\begin{aligned} \sqrt{2} x^{2} \end{aligned}$ ; lead coefficient: $\begin{aligned} \sqrt{2} \end{aligned}$ ; constant term: 10.
::标准表: 2x2-6x+10; 度: 2; 铅值: 2x2; 铅系数: 2; 恒定值: 10。

Standard form: $\begin{aligned} \frac{1}{3} x^{4} + \frac{8}{3} x^{2} + 4 \end{aligned}$ ; degree: 4; lead term: $\begin{aligned} \frac{1}{3} x^{4} \end{aligned}$ ; lead coefficient: $\begin{aligned} \frac{1}{3} \end{aligned}$ ; constant term: 4.
::标准表: 13x4+83x2+4; 度: 4; 铅期: 13x4; 铅系数: 13; 恒定期: 4。

Standard form: $\begin{aligned} x - 4 x^{- 1} \end{aligned}$ ; degree: 1; lead term: $\begin{aligned} x \end{aligned}$ ; lead coefficient: 1; constant term: 0.
::标准表: x-4x-1; 度: 1; 铅值: x; 铅系数: 1; 恒定值: 0。

Standard form: $\begin{aligned} - 10 x^{6} + 7 x^{5} - 6 x^{3} + 19 x^{2} - 3 x + 41 \end{aligned}$ ; degree: 6; lead term: $\begin{aligned} - 10 x^{6} \end{aligned}$ ; lead coefficient: -10; constant term: 41.
::标准窗体: - 10x6+7x5 - 6x3+19x2 - 3x+41; 度: 6; 牵头条件: - 10x6; 铅系数: - 10; 恒定条件: 41。

Explore More

Answers will vary. Example: $\begin{aligned} x^{3} - 9 \end{aligned}$ .
::答复将有所不同。例如: x3-9。

$\begin{aligned} f (0) = 8 \end{aligned}$ ; $\begin{aligned} g (0) = - 7 \end{aligned}$ , $\begin{aligned} h (0) = 0 \end{aligned}$ . The y-intercept for each of these polynomials is equal to the constant term.
::f( 0) = 8; g( 0) = 7, h( 0) = 0。这些多元值中每个值的 Y 拦截值等于常数。

Program 3
::方案3



Section 6.3 Adding and Subtracting Polynomials
::第6.3节增添和减减多面体

Review
::回顾

$\begin{aligned} 4 x^{3} + 3 x^{2} - 19 x + 20 \end{aligned}$
::4x3+3x2-19x+20

$\begin{aligned} - 6 x^{4} + 8 x^{3} - 2 x^{2} - 12 x + 7 \end{aligned}$
::-6x4+8x3-2x2-12x+7

$\begin{aligned} x^{4} + 7 x^{3} + 7 x^{2} - 3 x + 19 \end{aligned}$
::x4+7x3+7x2-3x+19

$\begin{aligned} - 6 x^{4} - 3 x^{3} - 3 x^{2} - 4 \end{aligned}$
::-6x4-3x3-3-3x2-4

$\begin{aligned} 3 x^{3} + 15 x^{2} - 11 x - 11 \end{aligned}$
::3x3+15x2-11x-11

$\begin{aligned} 2 x^{5} - 4 x^{4} + 3 x^{3} + 30 x^{2} - 3 x - 17 \end{aligned}$
::2x5 - 4x4+3x3+30x2 - 3x- 17

$\begin{aligned} 0.56 x^{5} + 1.29 x^{4} - 1.87 x^{3} + 1.59 x^{2} \end{aligned}$
::0.56x5+1.29x4 - 1.87x3+ 1.59x2

$\begin{aligned} - \frac{3}{8} x^{3} - \frac{13}{9} x^{2} + \frac{8}{15} x \end{aligned}$
::-38x3-139x2+815x

$\begin{aligned} 7 x^{3} - 12 x^{2} + 20 x - 12 \end{aligned}$
::7x3-12x2+20x-12

$\begin{aligned} - 2 x^{5} + 14 x^{4} - 10 x^{3} + 30 \end{aligned}$
::-2x5+14x4-10x3+30

Explore More

$\begin{aligned} - 4 x^{2} + 12 x + 35, 000 \end{aligned}$ is the total, and $\begin{aligned} 2 x^{2} - 2 x + 5, 000 \end{aligned}$ is the difference.
::-4x2+12x+35,000是总数,2x2-2x+5000是差额。

$\begin{aligned} P e r i m e t e r = 10 x - 2 \end{aligned}$
::周边=10x-2

$\begin{aligned} - 5 t^{2} + 10 t \end{aligned}$
::-5t2+10t

Section 6.4 Multiplying by a Monomial and the FOIL Method
::第6.4节单体和FIL方法的乘数

Review
::回顾

$\begin{aligned} 5 x^{3} - 30 x^{2} + 40 x \end{aligned}$
::5x3-30x2+40x

$\begin{aligned} - 8 x^{5} + 11 x^{3} - 20 x^{2} \end{aligned}$
::-8x5+11x3-20x2

$\begin{aligned} 21 x^{6} - 7 x^{5} + 112 x^{4} + 70 x^{3} \end{aligned}$
::21x6-7x5+112x4+70x3

$\begin{aligned} x^{3} - 5 x^{2} + 4 x - 20 \end{aligned}$
::x3 - 5x2+4x- 20

$\begin{aligned} 6 x^{3} - 21 x^{2} - 8 x + 28 \end{aligned}$
::6x3-21x2-8x+28

$\begin{aligned} - x^{3} - 2 x^{2} + 9 x + 18 \end{aligned}$
::-x3-2x2+9x+18

$\begin{aligned} 25 x^{2} - 120 x + 144 \end{aligned}$
::25x2 - 120x+144

$\begin{aligned} 16 x^{2} + 72 x + 81 \end{aligned}$
::16x2+72x+81

$\begin{aligned} - 6 x^{7} - 33 x^{6} + 2 x^{5} + 11 x^{4} \end{aligned}$
::-6x7-33x6+2x5+11x4

$\begin{aligned} 18 x^{6} + 17 x^{5} - 15 x^{4} \end{aligned}$
::18x6+17x5-15x4 18x6+17x5-15x4

Explore More
::探索更多

$\begin{aligned} 3 x^{3} + 18 x^{2} + 24 x \end{aligned}$
::3x3+18x2+24x

$\begin{aligned} 2 x^{3} + 5 x^{2} + 2 x \end{aligned}$
::2x3+5x2+2x

$\begin{aligned} (w + 100) (u + 20) = w u + 20 w + 100 u + 2, 000 \end{aligned}$
:w+100(u+20)=wu+20w+100u+2 000)

Section 6.5 Multiplying Polynomials
::第6.5节乘数聚合体

Review
::回顾

$\begin{aligned} x^{4} - 2 x^{3} - 2 x + 1 \end{aligned}$
::x4 - 2x3 - 2x+1

$\begin{aligned} 5 x^{4} - x^{3} + 40 x^{2} - 68 x + 12 \end{aligned}$
::5x4-x3+40x2-68x+12

$\begin{aligned} 3 x^{4} - 25 x^{3} + 36 x^{2} - 41 x - 105 \end{aligned}$
::3x4-25x3+36x2-41x-105

$\begin{aligned} 8 x^{5} - 6 x^{4} + 25 x^{3} - 12 x^{2} + 3 x - 18 \end{aligned}$
::8x5- 6x4+25x3- 12x2+3x- 18

$\begin{aligned} 2 x^{3} + 9 x^{2} - 51 x + 40 \end{aligned}$
::2x3+9x2 - 51x+40

$\begin{aligned} 2 x^{5} + 8 x^{4} + x^{3} + 4 x^{2} - 10 x - 40 \end{aligned}$
::2x5+8x4+x3+4x2-10x-40

$\begin{aligned} 9 x^{4} - 25 x^{2} + 16 \end{aligned}$
::9x4-25x2+16

$\begin{aligned} 10 x^{5} - 26 x^{4} - 15 x^{3} + 61 x^{2} + 10 x - 28 \end{aligned}$
::10x5 - 26x4 - 15x3+61x2+10x- 28

$\begin{aligned} x^{5} - 4 x^{4} - 15 x^{3} + 29 x^{2} - 51 x - 90 \end{aligned}$
::x5 - 4x4 - 15x3+29x2 - 51x- 90

$\begin{aligned} - 12 x^{5} + 22 x^{4} - 7 x^{3} - 77 x^{2} + 148 x - 110 \end{aligned}$
::-12x5+22x4-7x3-77x2+148x-110

Explore More
::探索更多

$\begin{aligned} x^{3} - 13 x + 12 \end{aligned}$
::x3 - 13x+12

$\begin{aligned} x^{4} - 4 x^{3} - 8 x^{2} - 16 x - 48 \end{aligned}$
::x4 - 4x3 - 8x2 - 16x- 48

$\begin{aligned} x^{3} - 4 x^{2} - 11 x + 30 \end{aligned}$
::x3 - 4x2 - 11x+30

Section 6.6 Long Division of Polynomials
::第6.6节一夫多妻制长分割法

Review
::回顾

$\begin{aligned} 2 x^{2} + 3 x - 10 + \frac{4}{x + 1} \end{aligned}$
::2x2+3x-10+4x+1

$\begin{aligned} x^{3} - 5 x^{2} - 25 x - 110 - \frac{580}{x - 5} \end{aligned}$
::x3 - 5x2 - 25x - 110 - 580x - 5

$\begin{aligned} 2 x^{2} - 8 x + 6 + \frac{- 19 x + 5}{x^{2} - 1} \end{aligned}$
::2x2-8x+6+19x+5x2-1

$\begin{aligned} x^{2} - 2 x + 3 - \frac{8}{3 x + 2} \end{aligned}$
::x2-2x+3-83x+2

$\begin{aligned} 3 x^{3} + 7 x^{2} + 7 x - 2 \end{aligned}$
::3x3+7x2+7x-2

$\begin{aligned} x^{3} - 4 x + 3 + \frac{- 3 x + 11}{2 x^{2} + 3} \end{aligned}$
::x3-4x+3+3+3x+112x2+3

$\begin{aligned} x^{2} - 14 x + 97 - \frac{500}{x + 5} \end{aligned}$
::x2 - 14x+97 - 500x+5

$\begin{aligned} x^{2} - 9 \end{aligned}$
::x2- 9

$\begin{aligned} 2 x^{2} + 11 x + 15 \end{aligned}$
::2x2+11x+15

$\begin{aligned} 5 x^{2} + 6 x - 27 + \frac{- 18 x + 78}{x^{2} + 3} \end{aligned}$
::5x2+6x-27+-18x+78x2+3

Explore More
::探索更多

$\begin{aligned} x^{4} + 3 x^{3} - 8 x^{2} - 9 = (x - 2) (x^{3} + 5 x^{2} + 2 x + 4) - 1 \end{aligned}$
::x4+3x3-8x2-9=(x-2)(x3+5x2+2x4)-1

$\begin{aligned} \frac{x^{3} - 4 x^{2} + 9 x - 13}{x - 2} = 4 x^{2} + 2 x - 3 + \frac{- 1}{x - 2} \end{aligned}$ and $\begin{aligned} f (2) = - 1 \end{aligned}$
::x3-4x2+9x-13x-2=4x2+2x-3+-1x-2和f(2)=-1

$\begin{aligned} y = 4 x - 11 \end{aligned}$
::y=4x- 11 y=4x- 11

Section 6.7 Synthetic Division of Polynomials
::第6.7节多元体合成司

Review
::回顾

$\begin{aligned} x^{2} + 4 x - 1 + \frac{12}{x + 2} \end{aligned}$
::x2+4x- 1+12x+2

$\begin{aligned} 4 x^{2} + 17 x + 16 \end{aligned}$
::4x2+17x+16

$\begin{aligned} 2 x - 1 + \frac{- 4}{2 x + 1} \end{aligned}$
::2 - 1+-42x+1

$\begin{aligned} 2 x^{3} - 33 x^{2} + 267 x - 2, 423 + \frac{21, 849}{x + 9} \end{aligned}$
::2x3-33x2+267x-2,423+21,849x+9

$\begin{aligned} x^{2} + 2 x - 1 \end{aligned}$
::x2+2x- 1

$\begin{aligned} 3 x^{4} + 3 x^{3} + 7 x^{2} + 7 x + 6 + \frac{4}{x - 1} \end{aligned}$
::3x4+3x3+7x2+7x6+6+4x-1

$\begin{aligned} 12 x^{2} + 40 x - 13 + \frac{19}{x + 3} \end{aligned}$
::12x2+40x-13+19x+3

$\begin{aligned} x^{2} - 7 x + 12 + \frac{- 14}{x + 2} \end{aligned}$
::x2-7x+12+-14x+2

$\begin{aligned} 6 x^{2} + 7 x + 39 + \frac{154}{x - 4} \end{aligned}$
::6x2+7x+39+154x-4

$\begin{aligned} x^{3} + 3 x^{2} - 6 x - 8 \end{aligned}$
::x3+3x2 - 6x-8

Explore More
::探索更多

Yes, since $\begin{aligned} \frac{2 x^{3} + 5 x^{2} - x - 6}{2 x + 3} = x^{2} + x - 2 \end{aligned}$ . Therefore, the three sides have side lengths of $\begin{aligned} 2 x + 3, x + 2 \end{aligned}$ , and $\begin{aligned} x - 1 \end{aligned}$ .
::是,因为2x3+5x2-x-62-62x+3=x2+x-2。因此,三边的侧长为2x+3、x+2和x-1。

a. $\begin{aligned} f (- 2) = - 14 \end{aligned}$
::a. f( 2) =-14

         b. $\begin{aligned} \frac{2 x^{4} - 5 x^{3} - 10 x^{2} + 21 x - 4}{x + 2} = 2 x^{3} - 9 x^{2} + 8 x + 5 + \frac{- 14}{x + 2} . \end{aligned}$ The remainder is $\begin{aligned} f (- 2) \end{aligned}$ .

   3. lead term: $\begin{aligned} x^{3}; \end{aligned}$ constant term: 16.

Section 6.8 Operations with Functions
::第6.8节具有职能的业务

Review
::回顾

$\begin{aligned} x^{2} + 5 x + 6 \end{aligned}$
::x2+5x+6

$\begin{aligned} 5 x + 1 - 3 \sqrt{x - 5} \end{aligned}$
::5x+1-3x-5

$\begin{aligned} 9 x - 45 \end{aligned}$
::9-45岁

$\begin{aligned} \frac{\sqrt{x - 5} (x^{2} + 5)}{3 x - 15} \end{aligned}$
::x-5(x2+5)3x-15

$\begin{aligned} 5 x^{3} + x^{2} + 25 x + 5 \end{aligned}$
::5x3+x2+25x5+5

$\begin{aligned} x \end{aligned}$
::x x

25

$\begin{aligned} \frac{26 \sqrt{x}}{5} \end{aligned}$
::26x5 26x5

$\begin{aligned} \frac{x^{\frac{3}{2}} - 25}{5 x} \end{aligned}$
::x32-255x

$\begin{aligned} \frac{x^{6}}{125} \end{aligned}$
::x6125

Explore More
::探索更多

$\begin{aligned} w i d t h = \frac{2 x^{2}}{\sqrt{x + 3}}, \end{aligned}$ with the restriction that $\begin{aligned} x \geq - 3 \end{aligned}$ .
::宽度=2x2x+3, 限制为 x-3 。

Profit function is $\begin{aligned} 60 x - 2, 500 \end{aligned}$ , and the break-even point is 41.67.
::利润函数为60x-2,500,平衡点为41.67。

They are not equal: $\begin{aligned} f^{2} (x) & = [f (x)]^{2} = (x + 4)^{2} = x^{2} + 8 x + 16 \\ f (x^{2}) & = [(x^{2}) + 4] = x^{2} + 4 \end{aligned}$
::它们不等于: f2( x) =[f( x) 2=( x+4) 2=( x+4) 2=x2+8x+16f( x2) =[( x2)+4) =x2+4

Section 6.9 Composition of Functions
::第6.9节职能的组成

Review
::回顾

$\begin{aligned} 9 x - 40 \end{aligned}$
::9-40岁

$\begin{aligned} 5 x^{2} + 26 \end{aligned}$
::5x2+26

$\begin{aligned} 3 | x | \end{aligned}$
::3x___________________________________________________________________________________________________________________________________________________

$\begin{aligned} 3 \sqrt{5 x - 4} \end{aligned}$
::35x-4

$\begin{aligned} 45 x - 31 \end{aligned}$
::45x-31岁

$\begin{aligned} \frac{\sqrt{x}}{x}, x > 0 \end{aligned}$
::xx,xx>0

$\begin{aligned} 5 x, x \geq 0 or 5 | x | \end{aligned}$
::5x 5x0Oor5x

$\begin{aligned} \sqrt{5} x, x \geq 0 or \sqrt{5} | x | \end{aligned}$
::5x 5x0Oor5x

$\begin{aligned} \frac{25}{x}, x > 0 or \frac{25}{| x |} \end{aligned}$
::25x,x>0or25x

$\begin{aligned} \frac{25 \sqrt{x}}{x}, x > 0 \end{aligned}$
::25xxx >0

Explore More
::探索更多

30% off: $\begin{aligned} d = 0.7 x \end{aligned}$ ; $10 coupon: $\begin{aligned} d = x - 10 \end{aligned}$ ; two ways to get the discount: $\begin{aligned} d = 0.7 x - 10 \end{aligned}$ and $\begin{aligned} d = 0.7 x - 7 \end{aligned}$ . The last equation gives the better discount.
::30%下调:d=0.7x;10张优惠券:d=x-10;两种折扣方式:d=0.7x-10和d=0.7x-7。

$\begin{aligned} A = P {(1 + r)}^{3} \end{aligned}$
::A=P(1+r)3

$\begin{aligned} V = \frac{256}{3} π t^{3} \end{aligned}$
::V=2563t3

Section 6.10 Connections: Impact of the Deepwater Horizon Oil Spill
::第6.10节连接:深海地平线石油泄漏的影响

Review
::回顾

$\begin{aligned} A = π {(0.13 t)}^{2} \end{aligned}$
::A(0.13t)2

619.3 square miles
::619.3平方英里

$\begin{aligned} A = π {(0.175 t - 4.9)}^{2} \end{aligned}$
::A(0.175t-4.9)2

3,848.45 square miles
::3,848.45平方英里

About 40.3 days
::约40.3天

Section 6.11 Connections: Protecting Your Data
::第6.11节连接:保护数据

Review
::回顾

$\begin{aligned} x^{2} + 1 + \frac{- 1}{x + 1} \end{aligned}$
::x2+1+1+-1x+1

No, the check values do not agree.
::不,检查值并不一致。

No, the check values do agree.
::不,检查值是一致的。

Answers will vary.
::答案将各有不同。

章节大纲

常规

答复 - Ch 6: 带有多面和函数的操作

Section 6.2 Polynomial Functions ::第6.2节 多元函数

Section 6.3 Adding and Subtracting Polynomials ::第6.3节 增添和减减多面体

Section 6.4 Multiplying by a Monomial and the FOIL Method ::第6.4节 单体和FIL方法的乘数

Section 6.5 Multiplying Polynomials ::第6.5节 乘数聚合体

Section 6.6 Long Division of Polynomials ::第6.6节 一夫多妻制长分割法

Section 6.7 Synthetic Division of Polynomials ::第6.7节 多元体合成司

Section 6.8 Operations with Functions ::第6.8节 具有职能的业务

Section 6.9 Composition of Functions ::第6.9节 职能的组成

Section 6.10 Connections: Impact of the Deepwater Horizon Oil Spill ::第6.10节 连接:深海地平线石油泄漏的影响

Section 6.11 Connections: Protecting Your Data ::第6.11节连接:保护数据

Section 6.2 Polynomial Functions
::第6.2节多元函数

Section 6.3 Adding and Subtracting Polynomials
::第6.3节增添和减减多面体

Section 6.4 Multiplying by a Monomial and the FOIL Method
::第6.4节单体和FIL方法的乘数

Section 6.5 Multiplying Polynomials
::第6.5节乘数聚合体

Section 6.6 Long Division of Polynomials
::第6.6节一夫多妻制长分割法

Section 6.7 Synthetic Division of Polynomials
::第6.7节多元体合成司

Section 6.8 Operations with Functions
::第6.8节具有职能的业务

Section 6.9 Composition of Functions
::第6.9节职能的组成

Section 6.10 Connections: Impact of the Deepwater Horizon Oil Spill
::第6.10节连接:深海地平线石油泄漏的影响

Section 6.11 Connections: Protecting Your Data
::第6.11节连接:保护数据