题目内容
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[主观题]
T/T是指()。A.提单B.电汇C.信用证D.银行保函
T/T是指()。
A.提单
B.电汇
C.信用证
D.银行保函
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T/T是指()。
A.提单
B.电汇
C.信用证
D.银行保函
理想气体物态方程是指p·V=n·R·T(n摩尔)。()
A.正确
B.错误
None of the managers said that,______?
A. didn't they
B. did they
C. aren't they
D. are they
A. doesn’t live
B. don’t live
C. doesn’t lives
D. don’t lives
If John leaves, we'll be in trouble, ______ ?
A. if he
B. does he
C. won't we
D. don't we
A.角频率为2的周期信号
B.角频率为的周期信号
C.准周期信号
D.随机信号