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【单选题】
某液体在内径的d1水平管路中稳定流动,其平均流速为u,当它以相同的体积流量通过等长的内径为d2(d2=d1/2)的管子时,其流速为原来的:倍:A.
2
B.
4
C.
8
D.
16
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【单选题】Interruption, more surely than anything else, kills conversation. The best of talkers interrupt 【C1】______ in conversation. However, the 【C2】______ interruption of the habitual interrupter and the uni...
A.
occasionally
B.
frequently
C.
regularly
D.
repeatedly
【单选题】Taking this kind of medicine, if _____, will surely produce side effect. [ ]
A.
continue
B.
having continued
C.
continuing
D.
continued
【单选题】Those who are ______ their present situations will surely make no more advances in life.
A.
content to
B.
satisfied of
C.
pleased to
D.
content with
【单选题】Looking back，we have reasons to believe that ___more prosperous and stronger China will surely make new contributions to _____civilization of mankind．
A.
a；a
B.
a；the
C.
the；the
D.
the；a
【单选题】Those who are ______ their present situation will surely make no more advance in life.
A.
content to
B.
satisfied of
C.
pleased to
D.
content with
【单选题】Surely I will inspect the incinerator burner more carefully and make sure it is not blocked. 02010489
A.
I will check the incinerator burner more carefully.
B.
I will check the incinerator burner surely.
C.
I will check he boiler burner more carefully.
D.
I will check the boiler burner surely.
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