For the following 40 questions, if you feel often , mark occasionally yes, mark not at all , mar

Hehe... Don't think too much about it...

I just looked at this set of questions...

I'm all . . .

If you can't survive ...

Am I going to die?

1. Draw a straight line with a length of 60, take the two ends of the line as the center of the circle, and draw a circle with a diameter of 30.

2. Click "Draw - Circle - Tangent, Tangent, Radius" in the menu bar and put the mouse on the two circles with a diameter of 30, click when the tangent symbol appears (be sure to turn on object snaps), and then enter the radius of 25 according to the prompts, move the mouse to the top of the two circles, and press "Space" (draw a circle with a diameter of 50).

3. Draw a straight line from the center of a circle with a diameter of 50 perpendicular to a straight line with a length of 60. Click on "Drawing - Circle - Tangent, Tangent, Tangent" in the menu bar, click on a circle with a diameter of 30 (when the tangent symbol appears), click on a circle with a diameter of 50 (when the tangent symbol appears), and finally click on the line past the center of the circle with a diameter of 50 (when the tangent symbol appears) and press "Space" to finish. The other circle does the same.

Here are the results:

A: CIDR block:

b: CIDR block:

c: CIDR block:

d: CIDR block:

The process is not given.

After all, I figured it out for myself.

Only then can we learn the ability and have a sense of achievement.

1. Add "......" at the end".

2. As an industry association, the Internet Society of China (ISC) seems to be too heavy on the motion put forward by the industry, calling it a "call"; It is too light to call it an "opinion"; The word "initiative" should be in keeping with its status.

The correct one should be to issue a ......The call to action. A call or advocacy to be added after the civilized network.

The answer is correct, and the analysis is shown in Fig.:

Well, that's right. I did it with the method of general points, and this is also the answer.

The answer is correct, and I did the math as well.

That's right! If you look at the original formula as a fraction with a denominator of 1, then multiply the numerator and denominator by (4x 2-x+1) 1 2+2x and it will look like the above.