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【单选题】
采用中间级放气措施，是通过调节（ ）来进行防喘。A.
气流绝对速度的轴向分量
B.
气流绝对速度的切向分量
C.
转速
D.
径向速度的大小
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【简答题】学生因故不能如期注册者,应当事先向所在二级学院请假,并注明请假时间。请病假者应当有学校指定医院证明,并在返校时交验病历。请假时间从规定注册之日起,不得超过 周。因病确需续假者,凭学校指定医院证明办理续假手续。
【单选题】涉及溶液性质的下列说法中正确的是
A.
(A) 理想溶液中各组分的蒸气一定是理想气体
B.
(B) 溶质服从亨利定律的溶液一定是极稀溶液
C.
(C) 溶剂服从拉乌尔定律 , 其蒸气不一定是理想气体
D.
(D) 溶剂中只有加入不挥发溶质其蒸气压才下降
【单选题】Text 1 The sculptural legacy that the new United States inherited from its colonial predecessors was far from a rich one, and, in fact, in 1776 sculpture as an art form was still in the hands of art...
A.
B
B.
A
C.
A
D.
B
E.
D
F.
C
G.
B
H.
D
I.
D
J.
A
【单选题】What do you suppose the sentence “Mr. Douglas still sticks to his as firmly as ever means?”
A.
Douglas was still talking about Lincoln’s low position in life.
B.
Douglas was still standing on the other side of the counter.
C.
Douglas remained a drunkard ( 酒鬼 )and had not changed a bit.
D.
Douglas kept on going to gatherings and talking a lot.
【单选题】ohn was so sleepy he could not keep his eyes ____.
A.
open
B.
opened
C.
to open
D.
opening
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