贮水式电热水器主要由()、()、()和()四部分组成。
参考答案:箱体系统;制热系统;控制系统;进出水系统
解救过量肝素引起出血可选用()。
A.维生素K
B.维生素B12
C.鱼精蛋白
D.氨甲苯酸
What is the meaning “speed is not of primary importance”?()
A.Speed is important
B.Speed is not the most important
C.Speed is mainly important
D.Speed is first importan