制冷压缩机开机之前先排液,降低排液桶内的()。
A.液位
B.标高
C.位置
D.高度
参考答案:A
The new storybook is written in ____ easy English ____ beginners can understand it. [ ]
A. such; that
B. so; that
C. such; as
D. too; as
电阻并联电路中,电阻并得越多,总电阻()。
A、越大
B、越小
C、相等