患者,女,30岁,已婚。月经先后无定期,质稀、量少,腰痛,头晕,舌淡少苔,脉沉细尺弱。其证候是()
A.肝郁
B.肝血不足
C.阴虚
D.肾虚
E.气血虚弱
参考答案:D
Don't _____ at him. He tried his best. [ ]
A. smile
B. laugh
C. cry
D. cough
一般铜管的管径是指下列哪一项()
A.铜管的内径
B.铜管的外径
C.铜管的半径
D.铜管的厚度