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【判断题】
三相负载采用星形连接时，无论负载对称与否，线电流必定等于负载的相电流。A.
正确
B.
错误
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反馈参考答案：
举一反三
【判断题】如图所示,用一个 12 V 恒压源给一个额定电压 U N = 6 V ,额定电流 I N = 50 mA 的指示灯供电的 3 个电路,可判定其中正确的是 b 图电路。 ( )
A.
正确
B.
错误
【单选题】9下列BIOS设置程序主菜单中关于设置密码的选项是
A.
BIOS Security Features
B.
Boot Configuration Features
C.
Advanced Bios Features
D.
Power Management Features
【单选题】His brain has worked away on the idea of a universal cure.
A.
rich
B.
quick
C.
productive
D.
fertile
【单选题】79 His__ brain has worked away on the idea of a universal cure.
A.
rich
B.
quick
C.
productive
D.
fertile
【单选题】— Excuse me. You smoke here. — Sorry, I won't do it again. [ ]
A.
are supposed to
B.
had better
C.
aren't supposed to
D.
don't suppose to
【简答题】____、____、拱起。
【简答题】拱起
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