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【单选题】
(2010年)套管式换热器，顺流换热，两侧为水单相流体换热，一侧进水水温65℃，出水水温45℃，流量为1．25kg／s，另一侧入口水温为15℃，流量为2．5kg／s，则换热器对数平均温差为( )℃。A.
35
B.
33
C.
31
D.
25
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【简答题】毕达哥拉斯学派提出了( )是万物本源的学说。
【单选题】. 有如下嵌套语句 if(a
A.
k=(a
B.
k=(a
C.
k=(a
D.
k=(a
【单选题】Which sounds more casual and less definite?
A.
I'm hoping you can lend me £10.
B.
I hope you can lend me £10.
【单选题】Which sentence sounds more polite?
A.
“Door!”
B.
“Hold it”
C.
“Hold the door!”
D.
“Would you mind holding the door?”
【单选题】Under the influence of alcohol, people will ______.
A.
have a clear mind and be more aggressive
B.
commit self-destructive behavior
C.
suffer both natural and unnatural death
D.
be more alert and excited
【单选题】有如下嵌套的 if 语句 if(a if(a
A.
k=(a c)?b:c);
B.
k=(a
C.
k=(a
D.
k=(a
【单选题】Which sentence sounds more professional?
A.
“Hold on. I’m busy”
B.
“Hold the line for minute.”
C.
“Hold! I cannot talk to you now.”
D.
“May I put you on hold?”
【单选题】One of Freudian theories is that
A.
humans are half beast and half angel
B.
sexual and aggressive impulses are the basic human drives
C.
humans always fight with the complicated nature
D.
sex is only part of human bewilderments
相关题目：
【单选题】. 有如下嵌套语句 if(a
A.
k=(a
B.
k=(a
C.
k=(a
D.
k=(a