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【单选题】
纯电容正弦交流电路中，电压的有效值等于电流的有效值与的乘积，在相位上电压比电流( )。A.
超前90°
B.
超前120°
C.
滞后90°
D.
滞后120°
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反馈参考答案：
举一反三
【单选题】Which of the following is NOT the reason why Europeans and Americans regard 'risk' differently?
A.
According to related policies, Europeans only have one chance to run new companies.
B.
Failure to try a venture leads to more serious result in Europe than in the U. S.
C.
European tradition is more conservative than that of America.
D.
The EU doesn't give enough support to European people to open their own companies.
【简答题】Watch the video episode and select the correct answers. P57-58Unit 03 Episode 1.wmv
【单选题】Things that look black are reflecting ______.
A.
mostly black light
B.
all light
C.
many different colors
D.
no light
【单选题】Watch the video and tick the phrases that you hear. P107_1_mp4.mp4
A.
Do you really think...?
B.
I think that...
【单选题】Watch the video and find the right choice. P27_1_mp4.mp4 Mr. Williams wants to go to the ____.
A.
museum
B.
bank
C.
department store
【单选题】The life in an American school is not the same __________ that in a Chinese school. They are different __________ each other. [ ]
A.
as; with
B.
as; from
C.
like; from
D.
like; with
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