物质从______态变为______态的过程叫凝固．在凝固过程中要______热_爱下问搜题

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问题填空题

物质从______态变为______态的过程叫凝固．在凝固过程中要______热量．如：钢水______成钢块时会______大量热量．

答案

物质从液态变为固态的过程叫做凝固，凝固放热，钢水凝固成钢块时会放出大量热量．

故答案为：液；固；放出；凝固；放出．

单项选择题 A1型题

溺水的预后描述中不正确的是（）

A.复苏时间越长预后越差

B.pH越低，预后越差

C.血糖浓度越高，预后越好

D.溺水时间越长预后越差

E.复苏后脑血流量越高，预后越好

选择题

— How did you get paid from your work?

— As a rule, we were paid ______. [ ]

A. by hour

B. by the hour

C. by an hour

D. by hours