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【单选题】
下列变化中属于吸热反应的是( ) 1液态水汽化 2将胆矾加热变为白色粉末 3苛性钠固体溶于水 4氯酸钾分解制氧气 5生石灰跟水反应生成熟石灰 6干冰升华A.
①④
B.
②④
C.
③⑤
D.
④⑥
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举一反三
【单选题】The temperature at which the air is saturated with water vapor and below which condensation of water vapor will
A.
cur is referred to as the _____.
B.
precipitation point
C.
vapor point
D.
dew point
E.
absolute humidity
【单选题】[3-152]The temperature at which the air is saturates with water vapor and below which condensation of water vapor will occur is referre
A.
precipitation point
B.
vapor point
C.
dew point
D.
absolute humidity
【简答题】water vapor
【单选题】– Excuse me, would you lend me your calculator? – ( ).
A.
Certainly. Here you are
B.
Please don't mention it
C.
It's nothing
D.
Yes, I have a hand
【单选题】-- I want to put up the picture on the wall. Would you mind helping me with it? -- ______. With pleasure.
A.
Of course
B.
Of course not
C.
You'd better not
D.
Thanks a lot
【单选题】The temperature at which the air is saturated with water vapor and below which condensation of water vapor will occur is referred to as the .
A.
vapor point
B.
precipitation point
C.
absolute humidity
D.
dew point
【简答题】为评估出客观合理的价值，估价人员应本着（ ）等进行估价。
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