胸痹阴寒凝滞重证治宜
A．血府逐瘀汤B．丹参饮C．乌头赤石脂丸合苏合香丸D．瓜蒌薤白半夏汤E．瓜蒌薤白白酒汤
参考答案：C
The students spent as much time getting trained as they ____ studying.
A．disliked
B．were
C．had
D．did
MAN-B&W-S-MC/MCE主机操纵系统中，喷油定时自动调节气路中单向节流阀49的作用是（）。
A.延长喷油定时自动调节时间
B.缩短喷油定时自动调节时间
C.使喷油定时自动调节时间保持不变
D.阻断对定时控制的干扰
