單項選擇題在計算機網(wǎng)絡中,OSI(開放系統(tǒng)互聯(lián))參考模型的最低層是()。

A.傳輸層
B.網(wǎng)絡層
C.物理層
D.應用層


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1.單項選擇題微機中的I/O接口位于()。

A.總線和設備之間
B.CPU和I/O設備之間
C.主機和總線之間
D.CPU和主存儲器之間

2.單項選擇題計算機中,一個浮點數(shù)由兩部分組成,它們是()。

A.階碼和尾數(shù)
B.基數(shù)和尾數(shù)
C.階碼和基數(shù)
D.整數(shù)和小數(shù)

3.單項選擇題在計算機網(wǎng)絡中,OSI(開放系統(tǒng)互連)參考模型的最高層是()。

A.表示層
B.網(wǎng)絡層
C.應用層
D.會話層

4.單項選擇題微機的CPU中有一個程序計數(shù)器(又稱指令計數(shù)器),它用于存放()。

A.正在執(zhí)行的指令的內(nèi)容
B.下一條要執(zhí)行的指令的內(nèi)容
C.正在執(zhí)行的指令的內(nèi)存地址
D.下一條要執(zhí)行的指令的內(nèi)存地址

最新試題

翻譯:This chapter deals with the fundamental properties of reservoir rocks. The properties discussed are (1) porosity - a measure of the void space in a rock; (2) Permeability - a measure of the fluid transmissivity of a rock; and (3) fluid saturation - a measure of the gross void space occupied by a fluid. These properties constitute a set of fundamental parameters by which the rock may be described quantitatively.

題型:問答題

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:Since the volume factors and the solution gas-oil ratio are determined from laboratory measurements on samples of reservoir fluid at reservoir temperature and various pressures, these parameters are effective substitutes for detailed phase equilibrium data in most production calculations. However, these parameters are unknown at the time that exploration well tests are run, and hence they are estimated from correlation charts.

題型:問答題

翻譯:In the chapter and the next some aspects of rod pumping and of the instruments used to analyze pumping well behavior are discussed. Many different pumping systems are in current use , e.g. , conventional sucker rod pumping, long-stroke pumping , hydraulic ,centrifugal,and sonic pumping ,but no attempt is made to deal here with any other method than convention a sucker rod pumping.

題型:問答題

翻譯:The HF-HCI mixture (usually 3-percent HF and 12-percent HCI) then is injected. The HF reacts with calys, sand, drilling mud, or cement filtrate to improve permeability near the well-bore.The HCI will not react and is present to keep the PH low, preventing precipitation of HF reaction products. Sent to keep the PH low, preventing precipitation of HF reaction products.

題型:問答題

翻譯:Land maps are essential in establishing control wells and provide fundamental orientation. As Fig.2 illustrates, land maps which are readily available within most companies as well as readily available commercially, provide offset operators, total depth, formation tops and development dates. The land map is essential in establishing orientation and control.

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.

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: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:In addition to being useful as an exploration tool, subsurface maps are a necessary part of any reservoir engineering study; and petroleum engineers, as well as geologists, must be completely familiar with their construction and interpretation.

題型:問答題