湿颗粒的干燥最宜采用（）
A.鼓式薄膜干燥
B.沸腾干燥
C.喷雾干燥
D.冷冻干燥
E.吸湿干燥
参考答案：B
When I talked with my grandma on the phone, she sounded weak, but by the time we ________ up, her
voice had been full of life.[ ]
A．were hanging
B．had hung
C．hung
D．would hang
下列属于无组织排放的有( )。
A．通过15m高度的排气筒排放 B．通过25m高度的排气筒排放C．通过15m高度以下的排气筒排放 D．通过20m高度以下的排气筒排放
