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【单选题】
S7-300PLC 中接通延时型定时器指令在执行时,剩余时间值为 。A.
正向累加
B.
反向递减
C.
0
D.
一直为预置值
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【简答题】提单的性质和作用主要表现在( )。 A．占有提单并不代表有权占有和处分提单项下的货物 B．提单是承运人对托运人出具的货物收据 C．提单是代表货物所有权的凭证 D．提单是托运人和承运人之间订立的运输合同
【单选题】The students will put off the match until next week, ______ they won't be so busy.
A.
since
B.
as
C.
when
D.
while
【单选题】You are lucky that the storm ________ until after your tennis match.
A.
hung over
B.
hung up
C.
held up
D.
held off
【单选题】The football match was really _______. No one was sure which side ________ until the last moment. [ ]
A.
firm; would win
B.
exciting; was winning
C.
tight; would win
D.
close; was about to win
【单选题】提单的性质和作用主要表现在( )。
A.
占有提单并不代表有权占有和处分提单项下的货物
B.
提单是承运人对托运人出具的货物收据
C.
提单是代表货物保管权的凭证
D.
提单是托运人和承运人之间订立的运输合同
【单选题】Thanks to the heavy rain, the football match _____ until next week.
A.
must put off
B.
must have been put off
C.
has to put off
D.
has to be put off
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