曲轴表面缺陷主要是（）和（）。
A．粗糙度／油孔
B．截面变化／粗大刀痕
C．截面变化／油孔
D．粗大刀痕／粗糙度
参考答案：C
The old couple have been married for 40 years and never once ________ with each other.
A．they had quarrelled
B．they have quarrelled
C．have they quarrelled
D．had they quarreled
腹中冷痈，手足厥冷，身体疼痛者，宜选用何方
A．附子粳米汤B．乌头桂枝汤C．通脉四逆汤D．桂枝加黄芪汤E．暖肝煎
