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【简答题】
配气机构的功用是?
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举一反三
【单选题】—What a beautiful sweater! How much did you _____ for it? —198 yuan. [     ]
A.
take
B.
cost
C.
pay
D.
spend
【单选题】以下物理量中变压器不能改变的是( )
A.
交流电压
B.
电流
C.
频率
D.
阻抗
【单选题】—I have just had my watch repaired.—How much did they______you for that?
A.
cost
B.
charge
C.
spend
D.
take
【简答题】Nonverbal behavio r such as smile and laugh seem to cut across cultural lines. But in reality, they are often found to be not ________________.
【简答题】Why did the popularization of Welsh costume boost the Welsh woollen industry?
【简答题】How did Welsh keep their own language?
【单选题】变压器不能改变的物理量是( )
A.
电压
B.
电流
C.
频率
D.
阻抗
【单选题】How________did you________cleaning your classroom that afternoon? [     ]
A.
often;cost
B.
much;play
C.
long;spend
D.
soon;take
【简答题】How did the Welsh speakers fight hard to preserve Welsh?
【单选题】变压器原、副绕组中不能改变的物理量是( )。
A.
电压
B.
电流
C.
阻抗
D.
频率