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【简答题】
以下关于汇付的陈述正确的是( )。 A．由于汇款申请书是汇款人和汇出行之间的一种契约，所以由于汇款申请书的错漏引起的延误、差错等，汇款人应自负后果 B．汇付属于顺汇性质 C．汇付的基本当事人包括汇款人和收款人 D．汇付方式比托收安全、更迅速
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【单选题】A pulse is applied to each input of a 2-input NAND gate. One pulse goes HIGH at t=0 and goes back LOW at t=1ms. The other pulse goes HIGH at t=0.7ms and goes back LOW at t=3ms. The output pulse can b...
A.
It goes LOW at t=0 and back HIGH at t=3ms.
B.
It goes LOW at t=0.7ms and back HIGH at t=3ms.
C.
It goes LOW at t=0.7ms and back HIGH at t=1ms.
D.
It goes HIGH at t=0.7ms and back LOW at t=1ms.
【单选题】A pulse is applied to each input of a 2-input NOR gate. One pulse goes HIGH at t=0 and goes back LOW at t=I ms. The other pulse goes HIGH at t=0.8 ms and goes back LOW at t=3 ms.The output pulse can b...
A.
It goes LOW at t=0 and back HIGH at t=3 ms.
B.
It goes LOW at t=0.8 ms and back HIGH at t=3 ms.
C.
It goes LOW at t=0.8 ms and back HIGH at t=l ms.
D.
It goes HIGH at t=0.8 ms and back LOW at t=1ms.
【简答题】（）是开展公关活动时不可忽视的首要环节。
【单选题】A pulse is applied to each input of an exclusive-OR gate. One pulse goes HIGH at t=0 and goes back LOW at t=I ms.The other pulse goes HIGH at t=0.8 ms and goes back LOW at t=3 ms.The output pulse can ...
A.
It goes HIGH at t=0 and back LOW at t=3 ms.
B.
It goes HIGH at t=0 and back LOW at t=0.8 ms.
C.
It goes HIGH at t=1 ms and back LOW at t=3 ms.
D.
both answers(b)and(c)
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