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【多选题】
To improve the efficiency and reduce the cost, manufacturing technologies of composite materials mainly include: ____.
A.
Automatic Tape Laying machine
B.
RTM molding
C.
RFI molding
D.
Autoclave molding
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】折杆ABC如图所示（在x-z平面），在C处作用了沿x方向的P1和沿y方向的P2 ，则AB杆发生的变形为（ ）
A.
轴向拉伸
B.
扭转
C.
x-y平面内的弯曲
D.
x-z平面内的弯曲
【单选题】During the development and application of the composite materials, we should put ____ as the top priority.
A.
Designability
B.
Safety
C.
Adaptability
D.
Cost-effective
【多选题】The development trend in structural design of aircraft includes: ____.
A.
From isotropic structure to anisotropic structure
B.
From metals to nonmetals
C.
From structural weldments to integral parts
D.
From common structure to intelligent material structure