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【判断题】
PLC梯形图中各软继电器都处于周期循环扫描工作状态,受同一条件制约的各个软继电器的线圈工作和它的触电的动作并不同时发生,属于“串行”的工作方式。A.
正确
B.
错误
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举一反三
【单选题】In England, shops are usually open from 9:00 in the morning to 5 :30 in the afternoon. On Sundays, some shops are open from 10:00 to4:00. A lot of shops are closed, but most towns have at least one op...
A.
5:30 p.m.
B.
5:00 p.m.
C.
4:30 p.m.
D.
9:00 p.m.
【单选题】Shopping in Paris is fun. There are big shops on Avenue des Champs-Elysees. They are open seven days a week. But be careful when you look at the prices; you have to pay a special 12 peccent tax on eve...
A.
e1012
B.
e1200
C.
e1120
D.
e1000
【简答题】If you go to sleep on your back, you're a very open person. You normally trust people and you are easily influenced by new ideas. You don't like to make people unhappy, so you never express your real ...
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