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【单选题】
在下列弹性压力计的弹性元件中，稳定性和抗过载性均比较理想的是（ ）A.
弹簧管
B.
波纹管
C.
膜片
D.
膜盒
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【单选题】Reading in Depth Fill in the blanks in the following passage by selecting suitable words from the Word Bank given below. Each choice in the Word Bank is identified by a letter. You may not use any of ...
A.
complain
B.
adjust
C.
adapt
D.
range
E.
negative
F.
positive
G.
mature
H.
hostility
I.
morality
J.
ease K. frustrations L. depressed M. neglected N. temporary O. contemporary
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【单选题】干燥得以进行的必要条件是
A.
物料内部温度必须大于物料表面温度
B.
物料内部水蒸气压力必须大于物料表面水蒸气压力
C.
物料表面水蒸气压力必须大于空气中的水蒸气压力
D.
物料表面温度必须大于空气温度
【简答题】Euro hovers near 23-month lows as dollar bulls eye U.S. GDP data April 26, 2019 LONDON, April 26 (Reuters) - The euro hovered near its weakest level since May 2017 on Friday as traders waited to see w...
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