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【单选题】
One silly question I simply can't stand is 'How do you feel?' Usually the question is asked of a man in action—a man walking along the street, or busily working at his desk. So what do you expect him to say? He'll probably say, 'Fine, I'm all right.' But you've put a bug in his ear—maybe now he's not sure. If you're a good friend, you may have seen something in his face, or his walk, that he overlooked that morning. It starts him worrying a little. First thing, you know, he looks in a mirror to see if everything is all right, while you go merrily on your way asking someone else, 'How do you feel?' Every question has its time and place. It's perfectly acceptable, for instance, to ask, 'How do you feel?' if you are visiting a very close friend in the hospital. But if the fellow is walking on both legs, hurrying to catch a train, or sitting at his desk working, it's not time to ask him that silly question. When George Bernard Shaw, the famous writer of plays was in his eighties, someone asked him 'How do you feel?' Shaw put him in his place, 'When you reach my age,' he said, 'either you feel all right or you're dead.' According to the writer, the greeting 'How do you feel?' ______.
A.
usually makes one feel uneasy
B.
is a good way to make friends
C.
is proper to ask a man in action
D.
shows one's consideration for other people
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举一反三
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A.
△ r G m θ 越负,反应速度越快
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△ r H m θ 越负,反应速度越快
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D.
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【单选题】对于一个化学反应,下列说法哪一个是正确的?
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B.
C.
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D.
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专业创造能力
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专业适应能力
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专业研究能力
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专业动手能力
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A.
100∠0o V
B.
100∠ 60oV
C.
100/sqrt(3)∠0o V
D.
100sqrt(3)∠60o V
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A.
380V
B.
220V
C.
0V
【单选题】对于一个化学反应,在定温下,下列说法哪一个是正确的?
A.
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B.
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A.
B.
C.
D.
D
【单选题】已知对称三相电路每相负载的电阻 ,感抗 ,设电源电压 ,则负载星形连接时的线电流IL为( )。
A.
38A
B.
22A
C.
0A
【单选题】已知对称三相电路每相负载的电阻 ,感抗 ,设电源电压 ,则负载星形连接时的相电流IP为( )。
A.
38A
B.
22A
C.
0A
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A.
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B.
标准摩尔焓变越负,反应速度越快
C.
活化能越大,反应速度越快
D.
活化能越小,反应速度越快
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