【单选题】Their idea was to get us to______the strike at once.
【单选题】The doctor came at once in _____ to my call.
【单选题】—There must be ____ with him. Let's call an ambulance. —All right.1 will call it at once. [ ]
【单选题】若有定义:int arr[15],n=5; 无法正确引用arr数组元素的是( )。
【单选题】Their idea was to get us to ______ the strike at once.
【单选题】—How often do you call your parents? —______, but usually once a week.
【判断题】( ) 安装有巡航控制系统的电控柴油车, 当使用巡航控制时, 电控柴油机按选定的巡航控制模式运转。