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【单选题】
PLC面板上的动作指示灯：RUN表示( ) 指示灯。A.
电源
B.
运行
C.
电池电压下降
D.
程序出错
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举一反三
【单选题】The author mentions all the following factors that may affect a soccer player's success EXCEPT.
A.
his family background.
B.
his neighbourhood.
C.
his practice.
D.
his height.
【单选题】Which of the following may be factors that affect the natural weather patterns（）
A.
Clouds.
B.
The amount of heat the earth receives.
C.
Man"s industrial and agricultural methods.
D.
All of the above.
【简答题】W hat are the factors that affect people ’ s dreams according to the passage?
【简答题】近几年，城市商业银行呈现三个新的发展趋势。下列选项中不属于城市商业银行发展趋势的是：（ ）。
【简答题】今天晚上 11 点关机,写出对应的命令
【多选题】Which of the following factors can affect the velocityof enzyme-catalyzedreaction?
A.
s ubstrate concentration
B.
temperature
C.
pH
D.
i nhibitors
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