模拟转换阀的组成不包括（）
A、均衡活塞
B、电磁进气阀
C、电磁排气阀
D、气—电转换器
参考答案：A
男衬衫成品规格衣长的允许公差是（）。
A.±0.5
B.±1.5
C.±3
D.±5
I was disappointed with the film. I had expected () to be much better.
A. that
B. this
C. one
D. it
