我国央行首要调控的货币是( )。
A．M1、M2和M3
B．M1和M2
C．M0和M1
D．M3
参考答案：C
--- You needn’t take an umbrella. It isn’t going to rain.
--- Well, I don’t know. It do.
A．might
B．need
C．would
D．should
离心泵加润滑油液面应在（）为宜。
