山药炒用的目的是
A．防止滋腻碍胃B．增强健脾之功C．两者均是D．两者均非
参考答案：B
When evacuating a seaman by helicopter lift，the vessel should be（）.
A.stopped with the wind dead ahead
B.stopped with the wind on the beam
C.underway with the wind 30°on the bow
D.underway on a course to provide no apparent wind
孔的上偏差用“ES”表示，轴的上偏差用“ei”表示。（）
