搜题请搜索小程序“爱下问搜题”
问题 多项选择题

控制循环锅炉的主要特点是（）以及协调循环回路中循环流量和锅炉负荷的关系。

A.停炉速度快

B.减少汽包壁温差

C.减轻水冷壁的高温腐蚀

D.提高启动和变负荷速度

答案

参考答案：A, B, C, D

名词解释

社区健康促进
查看答案
单项选择题

Sometimes we have specific problems with our mother; sometimes, life with her can just be hard work. If there are difficulties in your (1) , it’s best to deal with them, (2) remember that any (3) should be done (4) person or by letter. The telephone is not a good (5) because it is too easy (6) either side to (7) the conversation.

Explain to her (8) you find difficult in your relationship and then (9) some new arrangements that you think would establish a (10) balance between you. Sometimes we hold (11) from establishing such boundaries because we are afraid that doing (12) implies we are (13) her. We need to remember that being (14) from our mother does not (15) mean that we no longer love her. If the conflict is (16) and you cannot find a way to (17) it, you might decide to give up your relationship with your mother for a while. Some of my patients had (18) "trial separations". The (19) allowed things to simmer down, enabling (20) .

（4）（）

A.by

B.for

C.to

D.in
查看答案