下列施工用电中属于三类负荷的是( )。
A．供水系统 B．供风系统C．混凝土预制构件厂 D．木材加工厂
参考答案：D
漠河正午日影最短的节气是
A．冬至
B．夏至
C．春分
D．秋分
—There is __________ salt in the kitchen now.
—Why not go to the supermarket to buy some?
A．few
B．a few
C．little
D．a little
