氯化钠是日常生活中人们常用的调味品。下列性质可以证明氯化钠中一定存在离子键的是[ ]
A.具有较高的熔点
B.熔融状态能导电
C.水溶液能导电
D.常温下能溶于水
答案:B
—What does "___________" mean?
—That means, the things that people do mean more than what they say.
A.Easier said than done
B.Actions speak louder than words
C.Honesty is the best policy
D.Constant dropping wears the stone
钢坯加热的目的是什么?