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【单选题】
电流在单位时间内所做的功叫做()
A.
电功率
B.
效率
C.
作用力
D.
耗损率
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举一反三
【简答题】It can be inferred from the passage that the man was __________. [A] regretting the days of his youth. [B] dwelling on what he had done. [C] repenting the choice he had made. [D] lingering on the thou...
【单选题】在 PowerPoint 中,可以选中对象,按住 ( ) 键快速复制出新对象。
A.
Shift
B.
Ctrl
C.
Home
D.
Alt
【单选题】It can be inferred from this passage that automobiles ______.
A.
are an important part of the world's economy
B.
are becoming less dangerous
C.
will produce less air pollution in the future
D.
are killing more people in recent years than in the past
【单选题】在PowerPoint中复制对象可按住( )键并拖动鼠标来完成。
A.
Shift
B.
Ctrl
C.
Alt
D.
Enter
【单选题】45钢工件要求高强韧性的热处理是 。
A.
正火
B.
淬火
C.
淬火+高温回火
D.
淬火+低温回火
【单选题】在PowerPoint中,可以选中对象,按住( )键快速复制出新对象。
A.
Shift
B.
Crtl
C.
Alt
D.
Home
【单选题】小王欠小李 500 元,小李欠小张 500 元,小李告诉小王由小王向小张支付欠款,结果小王到期未还钱,下列关于还钱的说法中,正确的是_______。
A.
小张应向小王主张债权
B.
张应向小李主张债权
C.
小李没有向小张还钱的义务
D.
小王没有向小张还钱的义务
【单选题】According to the passage, an artist is different from a handicraftsman in that ______.
A.
the former is more beautiful than the latter
B.
the latter is more independent than the former
C.
the latter is more honored than the former
D.
the former is more imaginative than the latter
【单选题】小王欠小李500元,小李欠小张500元,小李告诉小王由小王向 小张支付欠款,结果小王到期未还钱,下列关于还钱的说法中,正确 的是_______。
A.
小张应向小王主张债权 �
B.
小张应向小李主张债权 �
C.
. 小李没有向小张还钱的义务
D.
小王没有向小张还钱的义务 n>
【判断题】一个实际电压源为一个理想电压源与内阻相串联。
A.
正确
B.
错误
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