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【单选题】
按连续介质概念,流体质点是指
A.
流体的分子
B.
流体内的固体颗粒
C.
几何的点
D.
几何尺寸同流动空间相比是极小量,又含有大量分子的体
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参考答案:
举一反三
【简答题】---I' m not quite sure  ____ to get there. ---You' d better ____ a map. A. when consult         B. when instruct C. how consult          D. how instruct prefix='o' ns='urn:schemas-microsoft-com:office...
【单选题】What material do engineers use to fabricate fiber?
A.
silicone dioxide
B.
silicon
C.
silicone
D.
silicon dioxide
【简答题】What material do engineers use to fabricate fiber?A. silicone dioxide B. silicon C. silicone D. silicon dioxide
【判断题】钢筋混凝土楼梯按结构受力状态可分为粱式、板式、折板悬挑式和螺旋式,前两种属于空间受力体系;后两种属于平面受力体系。
A.
正确
B.
错误
【简答题】图5结构ABCDEFG分别是:
【判断题】钢筋混凝土楼梯按结构受力状态可分为梁式、板式、折板悬挑式和螺旋式,前两种属于空间受力体系;后两种属于平面受力体系。
A.
正确
B.
错误
【判断题】钢筋混凝土楼梯按结构受力状态可分为梁式、板式、折板悬挑式和螺旋式,前两种属于空间受力体系;后两种属于平面受力体系。
A.
正确
B.
错误
【多选题】What do civil engineers build?________
A.
public facilities
B.
Privately-owned facilities
C.
complete cities and towns
D.
planning and designing space platforms to house self-contained communities
【单选题】. This is really a big problem for all of us, but I’m sure we can ________ it soon.
A.
get out
B.
get on
C.
get off
D.
get over
【单选题】What do safety engineers do in the process of safety engineering?
A.
Analyze an early design of a system
B.
Find out what faults can occur
C.
Propose safety requirements in design specifications
D.
All of the above
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