华沙条约组织

根据图片及对话内容排序。

A. Now pick up the scissors. Hold the paper carefully and cut through it. Keep the small piece of string

    between you and the scissors, so you do not cut the string.

B. "Magic string" is a popular magic trick. You can do this trick for your friends or family. You just need

    a piece of paper, a piece of string and some scissors. That's all.

C. Pick up the paper and fold side A down. Now your friends can see side B, but they can't see side A.

    Side A is shorter than B, so it does not cover the string. Push the middle of the string up, and fold C

    up over A. Now most of the string is inside the paper, but a small piece of the string is outside. You can

    see it but your friends can't.

D. Put one hand over the paper, and then pull the string out slowly with your other hand. The string is still

     in one long piece!

E. First, fold the paper so that it is like the paper in the picture. Side A is shorter than side B, but not much

    shorter. Side C is much shorter than Side B. Show the long piece of string so that people can look at it.

     Put this piece of string on the paper.

1._____2_____3._____4._____5._____

如图所示是一列简谐横波在某一时刻的图象，A、B、C是介质中的三个质点．已知波是向x正方向传播的，波速为v=20m/s，下列说法中正确的是（　　）

A．这列波的波长是10m

B．质点A的振幅为零

C．质点B此刻向y轴正方向运动

D．质点C再经过0.1s通过平衡位置

造成经济损失(　　)万元以上或重伤3人以上或死亡2人以下等后果的质量事故属于重大施工质量事故。

A．5

B．10

C．15

D．20

一位孤单的旅游者在沙漠中迷路了，水也喝完了，就在这时，他突然发现身上还有一个梨。他惊喜地喊道：“太好了，我还有一个梨，它能救我的命!”他把那个梨紧紧地握在手中，继续在沙漠里行走。很多次他对自己说：“吃一口吧!”可是转念一想：“还是留到最渴的时候吧!”于是他顶着烈日，继续艰难前行。就这样一直坚持了三天，终于走出了沙漠。他手中的那个梨，早已经干了，可是他还是把它像个宝贝似的握在手里。就是这一个梨给了他希望和勇气，使他走出沙漠，救了自己的命。

死神向来害怕希望，哪怕这希望只是一个已经干了的梨。

作者认为希望：（）

A．越大越好

B．要符合现实

C．未必有用

D．能给人力量

在正常运行情况下，储能系统向电网调度部门提供的信息应包括（）。

A.储能系统充放电状态

B.储能系统荷电状态

C.储能系统充放电的有功功率

D.储能系统充放电的无功功率