管道干燥后应保证管道末端管内气体在最高输送压力下的水露点比最低环境温度低()℃。
参考答案:5
Kennedy牙列缺损分类法分几类()
A.2类
B.3类
C.4类
D.5类
E.6类
She is quite familiar the music that they are dancing .
A.to ; to
B.with ; to
C.with ; with
D.with ; 不填