碟阀调节性能好,通过改变碟板的旋转角度可以分级控制流量。
参考答案:对
下述关于break语句的描述中,( )是不正确的。
A.break语句可用于循环体内,它将退出该重循环
B.break语句可用于switch语句中,它将退出switch语句
C.break语句可用于对体内,它将退出if语句
D.break语句在一个循环体内可以出现多次
It looks like a terrible tiger but actually, () of pressed paper, it softens when damp and is washed away in a heavy rain.
A. made
B. having been made
C. to be made
D. being made