用戴维南定理求题图电路中的电流Io。
用戴维南定理求题图电路中的电流Io。
第1题
第2题
_____has Mr. Clinton been a member of Greener China since he ____ to China?
A、How soon, comes
B、How often, got
C、How long, came
D、How far, arrived
第4题
China's economy has recently been expanding at better than a 10 percent monthly pace.
A.Y
B.N
C.NG
第5题
______ progress has been made in cutting down the mortality rate in China,
A.Rapid
B.Slow
C.Little
D.Negative
第6题
______ progress has been made in cutting down the mortality rate in China,
A.Rapid
B.Slow
C.Little
D.Negative
第7题
The central government has been working hard to keep China's economy ______.
A.durable
B.dubious
C.dramatic
D.dynamic
第8题
A.This song has been singing all over China for 50 long years. The melody still lingers in the air.
B.This song has been sung all over China for 50 long years. The melody still lingers in the air.
C.This song has been singing all over China for 50 long years, the voice of which cannot yet be forgot
D.This song has been sung all over China for 50 long years, the voice of which cannot yet be forgotten
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