下列属于劳动力导向型工业的是[ ]

A．普通服装制造厂

B．精密仪表厂

C．水产品加工厂

D．有色金属冶炼厂

In salad bars the waiter does not bring you salad. You have to____ yourself, usually to as much as you want.

A．bring

B．serve

C．help

D．supply