月经量少，色淡暗，质稀，其辨证是（）
A.气虚证
B.血虚证
C.肾阴虚证
D.肾阳虚证
E.肝肾阴虚证
参考答案：D
Doubting that the traveler carried drugs, the Customs officer stopped him and _______ his suitcase, but found nothing at all.
A．looked up
B．went through
C．searched for
D．referred to
段修时，单元制动缸金属零件磨耗深度须小于（）。
A.0.3mm
B.0.4mm
C.0.5mm
D.0.6mm
