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【判断题】
The sales, debts, and resources of some of the largest multinational firms exceed the gross national product, the public and private debt, and the resources, respectively, of some nations.A.
正确
B.
错误
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【单选题】— _______have you known each other? — Since we were in our childhood. A. How far B. How often C. How long D. How soon
A.
How far
B.
How often
C.
How long
D.
How soon
【简答题】1在包有二层相同厚度保温材料的圆形管道上,应该将 ______________ 材料包在内层,其原因是 ______________ , ______________ 。 2辐射传热速率计算公式为 ________________________ 。
【单选题】[1608] 单吊杆轴向压力R是下面哪几个力的合力________。 1载荷Q;2吊杆自重G/2;3吊货索张力Q;4千斤索张力T;5起货机的拉力
A.
①②③④
B.
②③④⑤
C.
①③④⑤
D.
①②④⑤
【简答题】在包有二层相同厚度保温材料的圆形管道上,为减少热损失应该将导热系数_()(填大,小)的材料包在内层。
【单选题】听力原文：W: How long have you known Susan? M: I've known her for about three years. I met her in the library where we used to read, but now I can only see her on the campus occasionally. Where did Susan o...
A.
In the library.
B.
In the college.
C.
On the campus.
D.
In the classroom.
【单选题】单吊杆轴向压力R是下面哪几个力的合力________。1载荷Q;2吊杆自重G/2;3吊货索张力Q ́;4千斤索张力T;5起货机的拉力K。
A.
①②③④
B.
②③④⑤
C.
①③④⑤
D.
①②④⑤
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