商品进入仓库的第一道关口是（）业务。
A、收货
B、发货
C、保管
D、盘点
参考答案：A
--- Could you tell us ______? ---- About two weeks.
A．how often are we going to be away
B．how often we are going to be away
C．how long are we going to be away
D．how long we are going to be away
汽车用交流发电机由（）、（）、（）、端盖、皮带轮、风扇叶轮等组成。
