在一定的误差范围要求下（　　　　）A．概率度大，要求可靠性低，抽样数目相应要多

S700K转辙机电机中间齿轮应转动灵活，前后拨动时（）、（）现象。

长期投资者投资证券市场的目的是为了获得 ______ ，短期投资者投资证券市场的目的是为了获得 ______ 。( )

A．公司分红；短期资本价差

B．短期资本价差；公司分红

C．公司分红；长期收益

D．长期收益；公司分红

The porter(行李搬运工) brings your bags to your room and helpfully explains all you want to know．Then he points to the phone and says：“If there’s anything else you need, just call．”All this time you have been thinking of one thing：“How much should I tip(付小费)him?” To make your next trip a little easier, here’s guide to tipping across some Asian countries.

Bangkok(曼谷)

In general, the more westernized the place is, the more likely you will be expected to leave a tip．Some top-end restaurants will add a 10％ service charge to the bill．If not, waiters will appreciate your tacking on(附加)the 10％ yourself．However, if you’re eating at a lower-end restaurant, a tip is not necessary．If you’re staying at one of Bangkok’s many five-star hotels, expect to tip the porter 20 to 50 baht(泰国货币单位),depending on how many bags you have．Taxis are now metered in Bangkok．Local custom is to round up(凑整数)the fare to the nearest five baht．

Hong Kong

Tipping is customary in this money-mad metropolis(大都市)．Most restaurants add a 10％ service charge to the bill, but the extra money often ends up in the pocket of the owner. If the service is good, add another 10％ to the bill, up to HKMYMl00 in an especially nice restaurant．For HK MYM10 hotel porters should do it at all but the nicest hotels where a new HKMYM20 bill may be more acceptable．When in a taxi, round up to the nearest dollar．

Kuala Lumpur（吉隆坡）

Tipping in Malaysia is limited to the expensive westernized hotels, which often add a 10％ service charge to your meal or hotel room．If you are at a hotel restaurant, expect a 10％ service charge．

But at local restaurants, there’s no need to add a tip. At five-star hotels, one or two ringgit(马来西亚货币单位)will satisfy a porter. At lower-end buildings don’t feel you have to tip Like Bangkok, many taxis are now metered so you can just round up to the nearest ringgit．

Seoul

Tipping is not part of Korean culture, although it has become a matter of course in international hotels where a 10％ service charge is often added．If you’re at a Korean barbecue joint(烧烤处), there’s no need to add anything extra．But a nice Italian restaurant may require a 10％ contribution．

If you’re at a top-end hotel, so expect to pay 500～l,000 won per bag．Taxi drivers don’t accept a tip．Keep the change for yourself．

小题1:Which of the following is NOT the unit of money?．

A．Charge

B．Baht

C．Won

D．Ringgit小题2:In which of the following cities is it unnecessary to tip the taxi-drivers?

A．Bangkok

B．Hongkong

C．Kuala Lumpur

D．Seoul小题3:If you stay at a five-star hotel in Kuala Lumpur, how much will you pay the porter at least?

A．10％ of service charge

B．Three ringgit

C．Half a ringgit

D．One ringgit小题4:The writer seems           ．

A．to tell the readers how to travel

B．to give the readers some advice on how to tip

C．to ask the readers to go on a travel to Asian cities

D．to make the trip more pleasant

字词联想操作需先弹出同音字窗口再用鼠标单击（）键。

A、“左”或“右”

B、“前”或“后”

C、“上”或“下”

D、“确定”或“取消”

大叶海藻的性状特征是（）

A.叶披针形，狭披针形或丝状，全缘或有锯齿，革质，有片状突起

B.叶圆形，全缘，气囊椭圆形，固着器盈状

C.叶条形，气囊纺锤形或球形，无刺状突起

D.叶倒卵形或披针形，气囊球形或卵球形，侧枝上有细小刺状突起

E.叶丝状，丛生，革质