【单选题】车场内调车信号机显示一个()灯光,表示准许越过该信号机。
【单选题】调车信号灯显示一个( )灯光,表示准许越过该信号机调车。
【单选题】When the headmaster spoke out his plan, most of the students ____ against it.
【单选题】某反应速率方程为 v == k c 2 (A)c (B)。定温下将体积减小到原来的1/2,则反应速率为原来的( )。
【单选题】When the headmaster came into the hall , all the students _______ to welcome him .
【判断题】维修音响时,如果不知道音响的密码,不要轻易拆开蓄电池负极。
【单选题】When the headmaster spoke out his plan, the _______of the students in the class________ against it .
【单选题】When the headmaster is away the ______headmaster looks after the school for him.
【单选题】在Word 2010的编辑状态,执行编辑选项卡中“复制”命令后()