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【判断题】
西门子公司的 S7-200 PLC 采用整体式结构形式。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】______ he has made a decision, it is not easy for you to make him change his mind.
A.
Though
B.
Unless
C.
Until
D.
Once
【单选题】____ he has made a decision, it is not easy for you to make him change his mind.
A.
Though
B.
Unless
C.
Once
D.
Until
【判断题】Once he has made a decision, it is not easy to get him to change his mind.
A.
正确
B.
错误
【单选题】Tom says this is the ______decision he has ever made in his career life.
A.
bad
B.
badly
C.
worse
D.
worst
【单选题】My best friend is so stubborn that once he has made a decision, it is futile to try to change his mind.
A.
hopeless
B.
easy
C.
useful
D.
necessary
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