JT-C型机车信号主机连接板上的A/B机切换按钮,用来人工切换A或B机为()。
参考答案:在线工作状态
用括号内所给动词的正确形式填空
小题1:Look! Our teacher _____( have) a new teddy bear.
小题2:“Mike,_______( not stay ) out too late.” His mother says.
小题3:Mum, could you tell me what _____________ (wear) at the party?
小题4: (be) there any interesting sports news in today’s newspaper?
小题5:Stephen with his parents often_____________ ( watch ) TV news at seven in the evening.
小题6:The park is far from here. What about ________________ (ride) bikes?
小题7:Why ________ you ___________ (not share ) the umbrella with him ?
小题8:It’s nine o’clock. Tom and I _____________ (chat) on the Internet.
试排牙时发现,义齿的形态大小与患者的面部形态相称,口微闭时上前牙切缘与上唇平齐,上尖牙远中面位于口角,此时应该
A.换大号上前牙B.换小号上前牙C.抬高上前牙D.降低上前牙E.不必修改