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【单选题】
脉冲调宽式晶体管调压器中，将发电机电压与基准电压的偏差信号转变为相应宽度的脉冲的电路是：（）.A.
电压检测比较电路
B.
调整电路
C.
整形放大电路
D.
控制执行电路
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【单选题】HEALTH AMBULANCE SERVICE In All Emergencies Dial 999 St John Ambulance: Berkshire County Office - ST John Centre Church Rd, Woodley, Reading, RG5 4QN. 0734 442456. For details of first aid at work uni...
A.
0734 442456.
B.
0734 442675.
C.
08675 559478.
D.
08675 564499.
【简答题】—Ambulance(急救）,please. —Ambulance.________小题1: —I'm in a phone box outside No. 30,Nanjing road. _____________小题2: —There，s been an accident. A man has been run over. He ’ s losing a lot of blood. Plea...
【单选题】听力原文： The Federal Aviation Administration is asking air ambulance companies to adopt better safety practices to curb a deadly surge in rescue helicopter crashes that have killed 60 people since 2000. ...
A.
The safety of air ambulances.
B.
The safety of rescue workers.
C.
Air ambulance accidents since 1978.
D.
Helicopter crashes since 2000.
【单选题】请阅读以下文字材料,完成17-18题 众物智联物流与供应链集团计划拓展北京市老年人的生鲜蔬菜销售与配送业务,公司计划对居住在北京的老人进行实地调研、拜访,以全面了解顾客对生鲜蔬菜品类、价格及物流服务等项目的需求。通过调研工作众物智联物流与供应链集团初步确定四环以内,家住3楼及以上(无电梯)且行动不便的老人为其新的目标顾客。 众物智联物流与供应链集团生鲜连锁总部可以通过朋友介绍、登门拜访和()等有效...
A.
微信朋友圈
B.
电子邮件
C.
小区老人活动
D.
警察救助
【判断题】In addition from these arrangements, extra ambulance will be on the duty until midnight.()
A.
正确
B.
错误
【简答题】请完成楼梯地面计价工作。
【单选题】Finding the old man in danger , . [ ]
A.
a doctor was sent for without delay.
B.
an ambulance was called for at once.
C.
his son sent for a doctor at once.
D.
The house was crowded with his children.
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