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【单选题】
使用热导池检测器时,用下列 ( ) 气体作载气,其效果最好。A.
H 2
B.
He
C.
Ar
D.
N 2
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【单选题】听力原文：M: The mountain seems high. It makes me dizzy to climb it this year, but it's worth it for the view. W: The mountain ma)' not be higher, but we're older. Q: What has changed since last year? (14)
A.
The mountain's height.
B.
The woman's height.
C.
The view.
D.
Their ages.
【单选题】Our football team’s ____ has been excellent during the whole year.
A.
demand
B.
master
C.
history
D.
performance
【简答题】They will quite ______ squander a whole year's savings on two weeks in the sun. (happy)
【简答题】万向传动装置主要由 、 和 组成。A. 万向节、传动轴、中间支承
【简答题】万向传动装置主要由 、 和 组成。
【单选题】It's reported that the United States uses __________ energy as the whole of Europe every year. [ ]
A.
as twice
B.
twice much as
C.
twice as much
D.
twice much
【简答题】万向传动装置主要由 和 组成,有的还加装 ,万向传动装置一般都是装在 和 之间。
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