【简答题】John is (old)______ of the three waiters.
【判断题】电磁感应式传感器的作用是检测出制动的车轮转速,并把速度信号送到电子控制器。
【单选题】在外部参照管理器中将一个参照绑定 , 外部参照的图层名为 :
【简答题】The service in this restaurant is very poor there are not enough waiters to wait ________ customers [A] on [B] for [C] with [D] to