油船专用压载水的排放可()
A、任意排放
B、申请后排放
C、A、B都对
D、A、B都错
参考答案:B
I was on the highway _______ this car went past followed by a police car. They ______ at least
150 kilometers an hour. [ ]
A. when; should have been driving
B. while; would have driven
C. as; could have driven
D. when; must have been driving
便秘的病理关键是()
A.肠胃积热,肠道津枯
B.大肠传导功能失常
C.气机阻滞,胃肠障碍
D.气血亏虚,大肠无力传导
E.阴寒内生,胃肠凝滞