煮沸消毒灭菌时在水中加1%~2%的碳酸氢钠主要可以
A.去污B.保护物品C.提高沸点D.杀死芽胞E.节省时间
参考答案:C
You have made a few mistakes in your composition but______, it's well written. [ ]
A. first of all
B. on the whole
C. on the other hand
D. so far
下列法律事实中,属于事件而不属于行为的是______。
A.订立合同
B.地震
C.立遗嘱
D.结婚