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D.假如要设置文字大小为当前默认字体尺寸的二倍,单位用( )
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【单选题】在对称三相四线制供电线路上，每相负载连接相同的灯泡（正常发光）。当中性线断开时，将会出现 （ ）
A.
三个灯泡都变暗
B.
三个灯泡都因过亮而烧坏
C.
三个灯泡有明有暗
D.
仍然能正常发光
【单选题】I admire my English teacher. I can remember very few occasions _____ she stopped working because of ill health. [ ]
A.
that
B.
when
C.
where
D.
which
【单选题】If it hadn’t been for the help of my English teacher, I the first prize in the English Writing Competition.
A.
would not win
B.
would not have won
C.
would win
D.
would have won
【单选题】对称三相四线制供电线路中,每相负载连接相同的灯泡(正常发光)。若断开A相,则出现的情况是()。
A.
A相灯泡不亮, B相灯泡比C相灯泡亮
B.
A相灯泡比B、C相灯泡都亮
C.
A相灯泡不亮, B、C相灯泡因过亮而烧毁
D.
A相灯泡不亮, B、C相灯泡亮度一样
【单选题】对称三相四线制供电线路中,每相负载连接相同的灯泡(正常发光)。若断开A相,则出现的情况是()。
A.
A 相灯泡不亮, B相灯泡比C相灯泡亮
B.
A 相灯泡比B、C相灯泡都亮
C.
A 相灯泡不亮, B、C相灯泡亮度一样
D.
A 相灯泡不亮, B、C相灯泡因过亮而烧毁
【单选题】Without the help of my English teacher, I _____ the first prize in the English speaking Competition. [ ]
A.
would win
B.
would have won
C.
would not win
D.
would not have won
【单选题】I enjoy listeningto Miss:: White my English teacher, ，I can only understand about half ofwhat she says,
A.
when
B.
because
C.
if
D.
though
【单选题】I admire my English teacher．I can remember very few occasionsshe stopped working because of ill h
A.
24．I admire my English teacher．I can remember very few occasions she stopped working because of ill health． A．that
B.
when
C.
where
D.
Which
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