属于多功能电能表功能的是( )。
A.计量有功(无功)电能;
B.具有分时、分方向需量;
C.显示、储存和输出;
D.显示、全天、全月总功量。
参考答案:A,B,C
有可能引起母体发生凝血功能障碍的流产是()。
A.先兆流产
B.不全流产
C.难免流产
D.稽留流产
E.习惯性流产
—Do you know_______.
—His wallet was stolen yesterday. [ ]
A. when he came here
B. what happened to him
C. what he did with it
D. what he was doing