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【单选题】
EVT20黏度传感器电路板进行自检时,如果数码显示管显示“d”,表明_____。A.
5V电源故障，电源下降到4．65V以下
B.
外部输入／输出回路测试失败
C.
15V电源故障，电源下降到13v
D.
软件故障
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【简答题】Today you can do nearly all your banking by using your smart phone. Many of the major banks allow you to pay bills or transfer funds with a smart phone. Experts say that about 70u/oof Americans will ...
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