在二维超声扫查时,连枷样二尖瓣尖端在()期,指向() A.收缩;左室 B.收缩;左房

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问题:

在二维超声扫查时,连枷样二尖瓣尖端在()期,指向()

A.收缩;左室

B.收缩;左房

C.舒张;右室

D.舒张;右房

E.以上均是

考点:儿外科住院医师超声科超声科题库
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不引起营业利润发生变动是()。

A.对持有存货提跌价准备 

B.处置某联营企业的投资损失 

C.持有交易性金融资产公允价值上升 

D.出售专利产生收益

题型:单项选择题

阅读理解。

     A winter wonderland on the outskirts of Quebec City has become one of Canada's hottest

attractions and most sought out accommodations. Guests stay close for warmth in sleeping bags

on beds of ice, hats pulled over their ears to prevent frostbite, while sipping cocktails (鸡尾酒) in

glasses also made of ice.

     A cool place to host a memorable wedding or for a romantic getaway, the Quebec Ice Hotel

has attracted 600,000 curious tourists, including 30,000 who stayed overnight, since opening

seasonally 11 years ago. Like Victoria and Jeremy Martin, dozens of couples will exchange vows

(誓约) this winter in a temporary church next to the hotel, sculpted entirely from blocks of ice with

seats covered in furs.

     Average temperatures fall below minus 20 degrees C (minus four F) in winter, but inside the hotel's

36 rooms it is relatively cozy. Thick walls of packed snow and ice act as an insulator, trapping body

heat inside. Each room is uniquely decorated, using designs created by Quebec architecture students.

Two hotel bars also sell special cocktails in ice glasses.

     First-time guests of the hotel, however, are recommended to stay only one night as sleeping in

sub-zero temperatures is not very refreshing. This year for the first time the ice hotel has teamed up

with a bricks and concrete Quebec City hotel to offer packages for one-night accommodations at

each. Prices for one night only at the ice hotel start at 200 US dollars per person.

     The 3,000-square-metre (32,300-square-feet) buildings take six weeks starting in December to

build, using 15,000 tonnes of snow and 500 tonnes of ice, at a cost of some 750,000 US dollars.

Eleven weeks after its seasonal grand opening, the hotel will close on March 27 and then melt away

with the arrival of spring.

1. What is true with the ice hotel?

A. 630,000 people have visited it.

B. 30,000 people visit it each year.

C. It has stayed open for many years.

D. Wedding ceremonies are often held there.

2. The underlined word "insulator" in Paragraph 3 possibly refers to something that _____.

A. stops heat passing throughit

B. collects and reflects light and heat

C. makes things become very cold

D. works like an air-conditioner

3. What can we learn about the hotel rooms?

A. It can be -20°C inside.

B. The temperature is always below 0°C.

C. The rooms all look alike.

D. Each room costs $200 per night.

4. First-time guests are advised to stay there only one night because _____.

A. they may not be able to stand the cold

B. their other night is with an ordinary hotel

C. new guests have less advantages over old ones

D. the first-day service is just for a test run

5. If you choose to visit the ice hotel during the Christmas season, you'll find _____.

A. it doesn't exist at all

B. it is just being built

C. most of its rooms are vacant

D. it is crowded with guests

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中国青年志愿者帽子为什么颜色?

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一般来说,植物油脂比动物油脂好,是由于()。

A.植物油脂可促进脂溶性维生素的吸收

B.植物油供给的热能比动物油高

C.植物油含饱和脂肪酸比动物油高

D.多吃不致引起肥胖

E.植物油的消化率比动物油高

题型:单项选择题

电气设备开路运行时()。

A.电流无穷大

B.电压为零

C.电流为零

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