反渗透不可去除（）。
A、有机物
B、阴阳离子
C、气体
D、悬浮物
参考答案：C
Tom is good a student he is often praised by the teacher.
A．such; as
B．so; as
C．such; that
D．so; that
气压机滑油泵辅泵入口阀开出口阀开
