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【简答题】
试计算在25°C及标准压力下,1 mol液态水蒸发成水蒸气的气化焓。已知100°C及标准压力下液态水的气化焓为2259 J/g,在此温度区间内,水蒸气的平均摩尔定压热容分别为75.3 J/(K mol) 和33.2 J/(K mol) 。
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【单选题】Without friends, he felt ______ in the city he had just arrived in.
A.
alone
B.
lone
C.
lonely
D.
lonesome
【单选题】圆轴受集度为m。的均布扭转力偶矩作用，如图所示。则该轴的刚度条件有四种答案，正确的是( )。
A.
m q /(GI p )≤[φ']
B.
m q l/(GI p )≤[φ']
C.
m q l/(2GI p )≤[φ']
D.
2m q l/(GI p )≤[φ']
【单选题】Without friends, he felt ______ in the city he had just arrived in.
A.
alone
B.
lonely
C.
independent
【单选题】Without friends, he felt __________ in the city he had just arrived in.
A.
preferable
B.
along
C.
lonely
D.
alone
【简答题】空心圆轴受集度为mq的均布扭转力偶矩，如图所示，则该轴的刚度条件有四种答案，其中正确的是___________
【单选题】Without friends, he felt ______ in the city he had just arrived in.
A.
happiness
B.
lonely
C.
independent
【简答题】Without friends, he felt in the city he had just arrived in. (lonely)A. lonely
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