电磁流量计适合测量()流体。
A、水
B、重油
C、水蒸汽
D、纸浆
参考答案:A, D
This is Mr. Smith, ______ I think has something interesting to tell us. [ ]
A. who
B. whom
C. that
D. 不填
电视机输出音频功率每增大1W,电视机增加约()W的电耗。
A.16;
B.12;
C.8;
D.4