循环水风吹损失与（）有关。
A.当地的风速
B.冷却塔的型式
C.冷却塔的结构
D.循环水水量
参考答案：A, B, C, D
Not seeing Justin, his sister , Kelly, ______ nine, heard him ______his favorite CD in his room.
A．aged; put on
B．age; put down
C．aging; put on
D．to age; put out
局部通风机如键槽变形较大可以在相隔（）度的地方新开链槽
A、60
B、90
C、135
D、180
