要将名为MyForm的窗体显示出来，正确的使用方法是A．MyForShow B．Sh

— Did you hear about the air crash? I feel so lucky!

— Yes, If you _____ that flight, I _____ speaking to you now. [ ]

A. were taking; wouldn't be        

B. took; wouldn't have been

C. had taken; wouldn't be          

D. had taken; wouldn't have been

在查询处理的“通用查询“中，以下不可作为通用查询的查询条件的是（）

A.交易时刻的汇率

B.业务参考号

C.业务的时间段

D.业务的交易币别

非断开式驱动桥（或称为整体式驱动桥）

管路系统的特性曲线是随着（）的增加而上升。

A、流量

B、扬程

C、轴功率

D、效率