乳癌腋窝淋巴结分组解剖标志为()
A.胸小肌
B.胸大肌
C.肋间内肌
D.肋间外肌
E.背阔肌
参考答案：A
- How would you like your tea?
- ______. [ ]
A. Very quickly
B. As it comes, please
C. Very much
D. I don’t like tea
水泵启动后负荷大的原因主要有（）。
A.启动时未关闭闸阀
B.泵轴弯曲
C.填料压盖太紧
D.联轴器间隙小
