下列计划中,属于应急计划的是()。
A.现场人员安全撤离计划
B.材料与设备采购调整计划
C.伤亡人员援救及处理计划
D.资产和环境损害控制计划
参考答案:B
力偶矩的大小等于()
A.力偶中力的大小
B.力偶臂的大小
C.A与B的乘积
D.A与B的和
— Don't worry; I am sure the doctor will be here in time.
— But what if he _____? It's going to rain and it's getting dark. [ ]
A. won't come
B. isn't coming
C. doesn't come
D. wouldn't come