在生产中如有条件，适当地提高系统的温度，对树脂的交换、再生过程等都是有利的。（）
参考答案：对
Many people spoke highly of the plan at the meeting, but _______ I don’t think it is of much practical use.
A．logically
B．personally
C．totally
D．exactly
简答防水地面的两种处理方法。
