All of our products are()first quality. A、forB、atC、ofD、with
All of our products are()first quality.
A、for
B、at
C、of
D、with
相关考题：
3、3 装卸搬运与物流安全、质量无关。Loading， unloading and handling are irrelevant to logistics safety, quality.
带头结点的单链表first为空的判定条件是：A．first == NULL;B．first-＞link == NULL;C．first-＞link == first;D．first != NULL;