导体的电阻与构成导体横截面积成()。A、正比 B、反比 C、无关 D、一次函数

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问题:

导体的电阻与构成导体横截面积成()。

A、正比

B、反比

C、无关

D、一次函数

考点:天车工考试天车工考试题库
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环保专家预言,废弃的地膜将最终成为祸害。武汉大学张俐娜教授提出了用甘蔗渣浆、麦秆、芦苇浆做原料生产“再生纤维素共混膜”的研究课题,并获得成功。使用“共混膜”不但能使农作物增产20%,而且其使用寿命一旦终结,其成分的30%可被微生物吃掉,剩余部分会在40多天后自动降解,对土壤无副作用。请回答问题:    

(1)普通地膜会造成什么“祸害”?    

(2)有人建议焚烧处理这些普通塑料废弃物,你认为行吗?为什么?

(3)张教授的研究课题有何积极意义?

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He climbed silently______seizing the thief______.

A.in the purpose; by surprise

B.with purpose of; surprisingly

C.with purpose of; surprisedly

D.with the purpose of; by surprise

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2008年5月8日,奥运火炬手在高寒、缺氧、低压的恶劣环境下把祥云火炬第一次带到了海拔高度为8844.43m的世界最高峰--珠穆朗玛峰.根据下表中的数值,可知在海拔8000m的山上,大气压值是______Pa.

海拔高度(km)海平面123456789101112
大气压值(kPa)101908071625447413631272320

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Italian Lakes and Greek Islands(12Days)

Prices starting from $1,999

Your tour begins in Milan, Italy, and moves on to the pretty Italian Lake District and the attractive resort(胜地)of Stresa, your home for two nights.  Collette Vacations has carefully chosen the Costa Victoria as your home away from home for your 7-night journey along the waterways of the Mediterranean.  The cruise ship is filled with the warmth and culture of Italy and is richly designed with entertainment(娱乐)areas and very good living conditions.  It will take you to the places of your dreams. 

You'll spend 4 days touring Greek cities you've always heard about. In Katakolon, you will have the only unguided tour to nearby Olympia on the whole journey.  Then with a local guide you will visit the Greek islands of Santorini, which is often related to the story of the lost city of Atlantis, and Mykonos, a wonderful island with beautiful beaches. 

Your journey ends in Verona, home of the love story Romeo and Juliet, with a fun-filled farewell dinner-a perfect ending to a pleasant journey. 

12Day, 25Meals:10Breakfasts, 6 Lunches, 9Dinners

Day 1 Overnight flight to Italy

Day 2-3 Regina Palace, stresa, Italy

Day 4-10 Costa Victoria(Costa cruises)

Day 11 Hotel Leopardi, Verona, Italy

Day 12 Leave for home

Please Note:

小题1:How is the journey planned?

A.It starts and ends in Italy.

B.It starts and ends in Greece.

C.It starts in Italy and ends in Greece.

D.It starts in Greece and ends in Italy.小题2:What can be inferred from the travel plan?

A.The price may get lower than those in the plan.

B.The prices include three meals a day.

C.The price is the highest in summer.

D.The prices include entertainment service.小题3:What does the underlined part “the Costa Victoria” most probably refer to?

A.A famous hotel.

B.A beautiful resort.

C.A comfortable ship.

D.A long-distance bus.小题4:Tourists will travel on their own in    .

A.Stresa

B.Olympia

C.Mykonos

D.Verona

题型:单项选择题

民心相同时“五通”的顶层设计,为“五通”开辟道路,又在政治层面上为“一带一路”建设保驾护航。

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