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【判断题】
电工仪表测出的交流电数值及通常所说的交流电数值都是指平均值。A.
正确
B.
错误
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举一反三
【简答题】语法9. When _________(ask) about the secret of his success, Steven Spielberg said that he owes much of his success and happiness to his wife and children.
【单选题】Much of his success ____ his powers of imagination.
A.
is contributed to
B.
is credited to
C.
is approved by
D.
is caused by
【单选题】As a salesman, much of his success comes from being what his customers want.
A.
in competition with
B.
in contrast with
C.
in company with
D.
in tune with
【简答题】具有下列化学结构的药物是（ ）
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