能根据发动机水温的变化自动调节冷却强度的是（）。
A.百叶窗
B.散热器
C.节温器
D.水泵
参考答案：C
Emergency line operators must always _____ calm and make sure that they get all the information they need to send help.
A．grow
B．stay
C．appear
D．become
拆迁期限是房屋拆迁许可证上载明的拆迁人完成拆迁事宜的期限。
