蒸发式冷凝器主要依靠水的()使馆内的制冷剂蒸汽冷却或液化。
A.冷凝
B.蒸发
C.冷却
D.加热
参考答案:B
He didn't get up _________ to catch the train this morning.[ ]
A. enough early
B. late enough
C. early enough
D. enough late
急性白血病引起出血的常见原因是()。
A.弥散性血管内凝血
B.凝血因子缺乏
C.白血病细胞浸润血管
D.纤维蛋白溶解
E.血小板减少