單項(xiàng)選擇題風(fēng)是指冷暖氣團(tuán)的交界面,當(dāng)冷鋒過境時(shí)()。

A.氣壓升高,風(fēng)力增大
B.氣壓降低,風(fēng)力增大
C.氣壓升高,風(fēng)速不變
D.氣壓降低,風(fēng)速不變


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1.單項(xiàng)選擇題渤海平均高潮間隙變化一般較小,但()附近產(chǎn)生較快。

A.黃口
B.煙臺(tái)
C.大連
D.秦皇島

2.單項(xiàng)選擇題渤、黃海沿岸各站平均水位在()出現(xiàn)正值,()后出現(xiàn)負(fù)值。

A.4月;7月
B.4月;10月
C.7月;10月
D.1月;2月

3.單項(xiàng)選擇題渤海風(fēng)暴潮的發(fā)生季節(jié)()。

A.秋季
B.一年四季
C.夏季
D.冬季

5.單項(xiàng)選擇題中國近海潮汐主要是由()傳入的潮波所引起。

A.太平洋
B.大西洋
C.日本灣
D.南海

最新試題

翻譯:If Colonel Drake, Uncle Billy smith , Anthony Lucas , and the untold thousands of other members of the fraternity of drilling pioneers were alive today , they would no doubt be fascinated and amazed by the proliferation of drilling tools and techniques that have been developed since those primitive days in Pennsylvania and Texas . Undoubltly , they would also be impress by the great numbers of drilling rigs at work today-------over two thousand in the USA alone.

題型:問答題

翻譯:The transportation of oil has also led to the spectacular development of gait ships ,the largest ships that ever sailed the oceans of the world .in the last few years ,since it has been necessary to ship oil from middle East-one of the largest oil producing regions-around the cap of Good Hope in south Africa these tanks has grown to almost unblievable proportions.

題型:問答題

翻譯:Meanahile ,steel pipes that would carry the oil were being developed . These were the first oil pipelines which take the advantage of the fact the oil is a liqnid. The ideas of a pipeline were not new , water has been transported through pipes for handreds of year ,The oil pipeline were not accepted without a struggle, hower.

題型:問答題

翻譯:The primary limitations for gas lift operations are the lack of formation gas of an outside source of gas, wide well spacing, and available space for compressors on off-shore plat forms. Generally, gas lift is not applicable to single-well installations and widely spaced wells that are not suited for a centrally located power system.

題型:問答題

翻譯:A third means of assessing the maturity of rocks is by the pyrolysis of a small amount of the source rock. The temperature is raised rapidly and the material vaporized or formed by thermal breakdown of the kerogen is passed through a detector which records, on a temperature base, peaks representing these two bursts of volatile material. To a first approximation the peak at the lower temperature represents oil already generated; the peak at the higher temperature indicates oil capable of being generated at adequate maturity.

題型:問答題

翻譯:A major oil company usually initiates the sequence of events that leads to the drilling of oil and gas wells in foreign fields, but independent oil operators pay for most of the wells in the United States. In fact, about 80% of all wells drilled in the U.S. today are financed by independents.

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翻譯:It has been suggested that an effective oil source rock generates 10-40 bbl or oil per acre ft (0.0013-0.0052 cc/cc) for each one per cent of organic carbon. This is approximately 500-2000 ppm by weight.

題型:問答題

翻譯:Gas lift is the method of artificial lift that uses an external source of high-pressure gas for supplementing formation gas to lift the well fluids. The primary consideration in the selection of availability and compression cost of gas.

題型:問答題

翻譯:In these early days, as lamp oil, was the important product and the main objects of refining was to extract as much of it as possible from the crude. Lubricants and some fuel oil were also sold, but gasoline was burnt off as unwanted and bitumen was also largely useless.

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翻譯:A porous medium has a permeability of one darcy when a single phase fluid of one centipoise viscosity that completely fills the voids of the medium, will flow through it under conditions of viscous flow at a rate of one cubic centimeter per second per square centimeter cross sectional area under a pressure or equivalent hydraulic gradient of one atmosphere per centimeter.

題型:問答題