进行二尖瓣替换手术时,容易损伤哪支冠状动脉。() A.前降支 B.对角支 C.右冠状

题型:单项选择题 B型题

问题:

进行二尖瓣替换手术时,容易损伤哪支冠状动脉。()

A.前降支

B.对角支

C.右冠状动脉

D.回旋支

E.左冠状动脉主干

考点:胸心外科主治医师胸心外科专业知识与专业实践能力综合练习胸心外科专业知识与专业实践能力综合练习题库
题型:单项选择题 B型题

Bicycles in China

Bicycles are very popular in China. In our country you can see bicycles almost everywhere. When you walk on the road, you will find a lot of people riding bicycles to school, shops and anywhere else. Therefore(因此), China is known as “the kingdom of bicycles”. In China, many families have one or two bicycles.

Compared(与……比) with cars, bicycles have many advantages. First, they are much cheaper than cars. Most Chinese can’t afford cars, but they can afford bicycles. Second, bicycles are small enough to park anywhere, while cars need a larger piece of land to park. What’s more, with lower speed, bicycles are safer than cars.

However, bicycles also bring some problems. Some riders don’t obey the traffic rules and some riders don’t think about others’ safety. So they ride too fast. During rush hours, too many bicycles may cause traffic jams. We still have a long way to go to solve the problem.

小题1:Where can you see bicycles in China?

A.In the big city.

B.In the town.

C.In the country.

D.Almost everywhere.小题2:“The kingdom of bicycles” here is saying ____.

A.China has a large number of bicycles

B.China makes bicycles

C.bicycles are a kingdom

D.only China has bicycles小题3: Which of the following is NOT an advantage of bicycles?

A.Bicycles are much cheaper than cars.

B.Bicycles are easy to park.

C.Bicycles are more beautiful than cars.

D.Bicycles are safer than cars.小题4:What problems can bicycles bring?

A.Bicycles are more and more expensive.

B.Riding bicycles is more dangerous than driving cars.

C.There are no places for so many bicycles.

D.Too many bicycles may cause traffic jams.小题5:What does the last sentence mean?

A.We should drive cars instead of riding bicycles.

B.It’s too far to ride bicycles.

C.Bicycles are safe enough.

D.We still need to do much to solve the problem.

题型:单项选择题 B型题

进行滑坡防治时,下述不正确的是()。

A.滑坡整治时应执行以防为主,防治结合,先治坡后建房的原则

B.滑坡整治时应采取有效的地表及地下排水措施

C.滑坡发生时,可在滑坡前缘被动区减重,以减少滑动力

D.滑坡计算应取荷载效应的最不利组合值作为滑坡的设计控制值

题型:单项选择题 B型题

导游人员在进行导游活动时向旅游者兜售或购买旅游者的物品的,由旅游行政部门责令改正,处( )的罚款,没收违法所得,情节严重的可吊销导游证并予以公告。

A.500元
B.500~1000元
C.1000~30000元
D.40000~50000元

题型:单项选择题 B型题

下列说法正确的是哪项( )

A.公司从税后利润中提取任意公积金须经董事会、股东会或者股东大会决议

B.公司提取的任意公积金不可以用于转增公司资本

C.公司发行股份的溢价款应列入公司的资本公积金,只能用来扩大经营或者转增资本

D.法定公积金转为资本时,所留存的该项公积金不得少于转增后公司注册资本的25%

题型:单项选择题 B型题

根据对有机物降解数学模型的分析,水温升高,耗氧常数k1(),耗氧量(),有机物降解速率()。

A.升高,增大,增大

B.减少,减少,减少

C.升高,增大,减少

D.减少,减少,增大

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