布置在同一平面上的两个支承板相当于的支承点数是()
[A]:2个
[B]:3个
[C]:4个
[D]:无数个
参考答案:B
137. Would you please get my films at photo studio tomorrow morning?.
A.finished
B.developed
C.wash
D.Finish
料线高低对布料的影响如何?