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问题 单项选择题

以下哪项是低钾血症的典型心电图表现（）

A.Q-T间期延长

B.Q-T间期缩短

C.T波低平

D.ST段降低

E.U波出现

答案

参考答案：E

解析：低钾血症的心电图表现：早期T波低平、变宽、双相或倒置，随后ST段降低，Q-T间期延长，U波出现，其中U波出现为低钾的典型心电图表现。因此E为正确选项。

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胶料结团时，导致自动称（）。
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     Have you ever been to London? Here is some hotel information for you.
     Kingsway Hall Hotel
     We offer quality service (优质服务) in Kingsway Hall Hotel. This location puts guests in easy reach of many places, such as the British Museum and Piccadilly Circus. Our hotel also has modern Western food, and offers a perfect dining environment. The lounge bar is a comfortable place to enjoy a drink while
watching the tourists. There are hundreds of dining choices within walking distance. Non-smoking rooms
are ready for guests.
     Hilton Docklands Riverside
     Located on the bank of the Thames, our hotel is about two miles east of Tower Bridge and 36 miles
from London Heathrow Airport. Our hotel has a beauty salon, a flower shop and a swimming pool. The
hotel also offers laundry (洗衣店) services, babysitting, shining shoes, and local area transportation.
     Windermere Hotel
     Located in the center of London, our hotel puts guests within easy reach of London's well-known
buildings. Buckingham Palace and the Royal Parks are just a short walk away. Within 1.5 miles you can
visit Westminster Abbey and the Houses of Parliament. The theatres, Harrods shopping centre, and the
designer shops of Sloane Square and Knightsbridge are all only a short walk away or a taxi ride away.
1. What does Kingsway Hall Hotel provide for its guests?
A. Chinese food.
B. A lounge bar.
C. Smoking rooms.
D. A swimming pool.
2. What is special about Hilton Docklands Riverside?
A. It offers different kinds of service.
B. It offers a reasonable price.
C. It has convenient transport.    
D. It has delicious food.
3. This passage is most likely to be found in ______.
A. a travel guide
B. a story book
C. a technical report
D. a geography magazine
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