电气系统故障电流表指示不稳定,其原因为()工作不稳定。
A、发电机
B、电流表
C、继电器
D、调节器
参考答案:D
从方框中选择恰当的句子补全对话。
A: Have you read today's newspaper?
B: NO. 1._____
A: Yes. 2._____
B: How did it happen?
A: Two students were playing football on their way home. 3._____
B: What did the driver do with them?
A: The driver took them to the hospital and 4. _____
B: How are the children now?
A: They were saved at last and 5._____
B. I hope everything goes well.
A: I hope So, too.
A. What happened to you?
B. they are getting better.
C. Anything important?
D. There was a traffic accident on Zhangshan Road yesterday evening.
E. A car hit them and they were badly hurt.
F. I’m sorry to hear that.
G. the doctors began to operate them on at once.
患者18岁。颏下无痛性缓慢生长圆球状肿物3年,大小5cm×6cm×4cm,表面光滑,境界清,质地似面团样,可活动,无触痛,肿物不随吞咽而活动,口底黏膜下未见异常。
该患者在行手术治疗时,应取的体位是
A.坐位头后仰
B.平仰位
C.平卧垫肩后仰位
D.侧卧位
E.平卧垫肩头转向一侧