《国际危规》规定的危险货物中的气体按其危险性,可以分为()。①易燃气体;②有毒气体;

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问题:

《国际危规》规定的危险货物中的气体按其危险性,可以分为()。

①易燃气体;

②有毒气体;

③无害气体;

④非易燃、无毒气体。

A.①②

B.②③

C.①②④

D.①②③④

考点:海船船员考试货运(大副)货运(大副)题库
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可见光损仿可引起()

A.雪盲

B.日光性视网膜病变

C.放射性视神经病变

D.吹玻璃工人白内障

E.视网膜出血

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2012年我国举行全国人大代表的换届选举工作。我国采取直接选举与间接选举相结合的方式,下列属于公民直接参与选举的有:(  )

① 县及县以下人大代表的选举        ② 县以上各级人大代表的选举

③ 乡及乡以上政府领导人员的选举    ④ 农村村民委员会成员的选举

A.①②

B.③④

C.①④

D.②③

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关于外源凝集素下列说法哪项不正确

A.外源凝集素不是抗体,但具有抗体的重要性质

B.外凝集素为免疫性糖结合蛋白或糖蛋白

C.江西蜗牛的蛋白腺中可提取抗A1凝集素

D.国产荆豆中可提取抗H外源凝集素

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阅读理解。

     Of course,the main difference on the Chinese dinner table is chopsticks instead of knife and

fork,but that's only superficial. Besides,in decent restaurants,you can always ask for a pair of knife

and fork,if you find the chopsticks not helpful enough. The real difference is that in the West,you

have your own plate of food,while in China the dishes are placed on the table and everyone shares.

If you are being treated to a formal dinner and particularly if the host thinks you're in the country for

the first time,he will do the best to give you a taste of many different types of dishes.

     The meal usually begins with a set of at least four cold dishes,to be followed by the main courses

of hot meat and vegetable dishes. Soup then will be served (unless in Guangdong style restaurants) to

be followed by staple food ranging from rice,noodles to dumplings. If you wish to have your rice to

go with other dishes,you should say so in good time,for most of the Chinese choose to have the staple

food at last or have none of them at all.

     Perhaps one of the things that surprises a Western visitor most is that some of the Chinese hosts

like to put food into the plates of their guests. In formal dinners,there are always "public" chopsticks

and spoons for this purpose,but some hosts may use their own chopsticks. This is a sign of genuine

friendship and politeness. It is always polite to eat the food. If you do not eat it,just leave the food in

the plate.

     People in China tend to over-order food,for they will find it embarrassing if all the food is consumed.

When you have had enough,just say so. Or you will always overeat!

1. What's the main difference on dinner table between China and West is ___________.

A. You have your own plate of food in West while in China everyone shares the dishes.

B. On Chinese dinner table,chopsticks replace knife and fork.

C. You're treated to a formal dinner for the first time.

D. The host will do the best to give you a taste of many different types of dishes.

2 .If you have a dinner in a Chinese home,in which order will the food be served in China?

a. a set of four cold dishes.

b. staple food such as rice,noodle or dumplings.

c. the main courses of hot meat and vegetable dishes.

d. serving soup.

A. acbd    

B. cabd  

C. acdb  

D. cadb

3. According to the passage,we can infer that ___________.

A.Chinese think it impolite for guests to leave food in the plate.

B.Chinese think it polite to put food into the plated of the guests with their own chopsticks.

C.People in China tend to over-order food,for they will find it embarrassing if all the food is consumed.

D. Chinese all think it impolite for guests to ask for a pair of knife and fork.

4. The sentence,in passage 2,"you should say so in good time" means ______.

A. you should say so early

B. you should say so happily

C. you'd better say so

D. you should say so kindly.

5. The "public chopsticks and spoons" are used for/to ______.

A. show the politeness to the guests.

B. share the food together

C. show the genuine friendship and politeness

D. put food into the plates of their guests

题型:单项选择题

引起周围性眩晕的因素有()。

A.小脑肿瘤

B.听神经纤维瘤

C.椎-基底动脉供血不足

D.链霉素、庆大霉素中毒

E.多发性硬化(中枢神经炎性腱鞘病)

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