对应急能力进行综合检验的是()。
A.桌面演习
B.实战模拟演习
C.应急训练
D.应急演习
参考答案:D
--Look! How fast he is running!
--Hard to _______________his legs were once broken.
A.know
B.realize
C.imagine
D.find
为一仓库设计一个电路,取货人在前门按电键K1,电铃响,红灯亮,送货人在后门按电键K2,电铃响,绿灯亮,按你设计一个电路图。