关于电荷量、电场强度、磁感应强度、磁通量的单位，下列说法正确的是（） A．牛/库

----Wang Ming, will you take part in the coming National English proficiency contest?

----        We should catch the precious chance .

A．Out of the question!

B．That’s for sure.

C．For what?

D．Why bother?

函数y＝log₃(x²－2x)的单调减区间是________．

通常判断锅炉缺水程度的方法是( )。

A．叫水

B．听水

C．排水

D．看水

碎煤机出料量明显降低的原因？

The issuance of asset backed securities (ABSs) versus straight debt would be desirable if:（）

A. a better credit quality is desired on the asset backed versus the corporation.

B. there are regulatory constraints on the deal.

C. the corporation’s credit rating may go up in the future.