下列解剖标志中哪个不属于口腔前庭范围（） A.唇系带 B.颊系带 C.舌系带 D.颊

锅炉缺水是锅炉运行中最常见的事故之一，通常判断缺水程度的方法是“叫水”。对相对容水量小的电站锅炉或其他锅炉，以及最高火界在水连管以上的锅壳锅炉，一旦发现缺水，应（）。

A．立即给锅炉上水 

B．关闭水位表的汽连接管旋塞 

C．立即停炉 

D．关闭给水阀

阅读理解。

     Our company, Eastern Energy, is here to help and provide you with personal advice on any matters

connected with your bill or any other questions about your gas and electricity supply.

     Moving Home

     Please give as much notice as possible if you are moving home, but at least 48 hours required for us

to make the necessary arrangements for your gas and electricity supply. Please telephone our 24-hour line

at 0131 6753 219 with details of your move. In most cases we are happy to accept your meter reading on

the day you move. 

     Meter Reading

     Eastern Energy uses various types of meter ranging from the traditional dial meters to new technology

digital display meters. Always read the meter from left to right, ignoring any red dials. If you require

assistance, contact our 24-hour line at 0600 7310 310

     Energy Efficiency Line

     If you would like advice on the efficient use of energy, please call our Energy Efficiency Line at 0995

7625 513. Please do not use this number for any other enquiries (询问).

     Special Services

     Passwords一you can choose a password so that, whenever we visit you at home, you will know it is

us. If you want more information, please ring our helpline at 0995 7290 290.

     Help and Advice

     If you need help or advice with any issues, please contact us at 0131 6440 188.

     Complaints (投诉)

     We hope you will never have a problem or cause to complain, but,if you do, please contact our complaints

handling team at PO Box 220, Stanfield, ST55 6GF or telephone us at 0131 6753 270.

     Supply Failure

     If you experience any problems with your electricity supply, please call free at 0600 7838 836, 24 hours

a day, 7 days a week.

1. Who is this passage most probably written to?

A. People applying for energy supply.

B. People moving home.

C. Persons in need of help.

D. Energy users of Eastern Energy.

2. If you have any complaints, what should you do?

A. Make a call or send a mail.

B. Contact Help and Advice.

C. Go to the company directly.

D. Ask for special services.

3. According to the passage, which of the following is true?

A. You are not expected to read your own gas or electricity meters.

B. It is now cheaper to use gas than electricity as a form of heating.

C. You are not charged for the call when you report supply failure.

D. You should inform Eastern Energy of a change of address on arrival at your new home.

高速离心泵出现无流量或流量不足、无压力或压力不足故障的可能原因是（）。

A、泵内未充满液体

B、入口管漏气或堵塞

C、装配不当或电机反转

D、增速箱油沫过多

控制性降压可出现哪些并发症

A．急性肾功能衰竭

B．脑栓塞和脑缺氧

C．全麻后苏醒延迟

D．持续性低血压

E．伤口反应性出血

广西壮族自治区塑料制品生产企业应当按照国际通行标准，生产和销售塑料包装袋、购物袋。