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【简答题】
由暴雨资料推求设计洪水时,假定设计暴雨与设计洪水频率__________。
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皮皮学刷刷变学霸
举一反三
【单选题】The award was contested by one of the______.
A.
competitors
B.
competition
C.
competing
D.
competitive
【简答题】I doubt whether he can _______ his efforts much longer as he looks very tired.A. hold up B. hold on C. keep on D. keep up
【单选题】I doubt whether he can _______ his efforts much longer as he looks very tired.
A.
hold up
B.
hold on
C.
keep on
D.
keep up
【单选题】I do not doubt ________ win in the race.
A.
whether he will
B.
whether will he
C.
that he will
D.
that will he
【单选题】()在加热状态时会发生化学反应,硬化后得到永久形状。
A.
塑料
B.
热固性塑料
C.
热塑性塑料
D.
塑胶
【判断题】热塑性塑料加热时发生化学反应。( )
A.
正确
B.
错误
【单选题】I doubt whether he can ______ his efforts much longer as he looks very tired.
A.
keep out
B.
keep in
C.
keep on
D.
keep at
【单选题】I doubt ______.
A.
whether he can come
B.
if he can come or not
C.
while he will be here
D.
that he will come
【简答题】I doubt whether he can _______ his efforts much longer as he looks very tired. (4.0分)A. hold up B. hold on C. keep on D. keep up
【单选题】I don’t doubt _____ for the journey by doing jobs on the ship.
A.
that he can pay
B.
whether he can pay
C.
that can he pay
D.
whether can he pay
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