当某设备输入操作正常结束时,操作系统将等待该输入操作结果的进程的状态改成A.就绪态

题型:单项选择题

问题:

当某设备输入操作正常结束时,操作系统将等待该输入操作结果的进程的状态改成

A.就绪态

B.运行态

C.等待态

D.挂起态

考点:计算机等级考试数据库技术三级数据库技术笔试97
题型:单项选择题

甲烷燃料电池的化学反应为CH4 + 2O2 = CO2 + 2H2O,其中1个电极反应式为2O2 + 8H4 + 8e- = 4H2O下列叙述不正确的是[ ]

A.CH4通入负极

B.O2通入正极

C.正极发生氧化反应

D.负极的电极反应式为:CH4 + 2H2O- 8e- = CO2 + 8H+

题型:单项选择题

赢得值原理图是对项目成本和进度进行综合控制的一种图形表示和分析方法。根据该图,下列表达式中表示实际成本超过预算的是( )。

A.BCWP—BCWS<0

B.BCWP—ACWP<0

C.BCWS—ACWP<0

D.ACWP—BCWS<0

题型:单项选择题

Until the late 1940s, when television began finding its way into American homes, companies relied mainly on print and radio to promote their products and services. The advent of television (1) a revolution in product and service. Between 1949 and 1951, advertising on television grew 960 percent. Today the Internet is once again (2) promotion. By going online, companies can communicate instantly and directly with prospective customers. (3) on the World Wide Web includes advertising, sponsorships, and sales promotions (4) sweepstakes, contests, coupons, and rebates. In 1996 World Wide Web advertising revenues (5) $ 300 million.

Effective online marketers don’t (6) transfer hard-copy ads to cyberspace. (7) sites blend promotional and non-promotional information indirectly delivering the advertising messages. To (8) visits to their sites and to create and (9) customer loyalty, companies change information frequently and provide many opportunities for (10) .

A prototype for excellent (11) promotion is the Ragu Web site. Here visitors can find thirty-six pasta recipes, take Italian lessons, and view an Italian film festival, (12) they will find no traditional ads. (13) subtle is the mix of product and promotion that visitors hardly know an advertising message has been (14) . Sega of America, maker of computer games and hardware, uses its Web site for a (15) of different promotions, such as (16) new game characters to the public and supplying Web surfers the opportunity to (17) games. Sega’s home page averages 250,000 visits a day. To heighten interest in the site, Sega bought an advertising banner on Netscape (18) increasing site visits by 15 percent. Online (19) in Quaker Oats’ Gatorade promotion received a free T-shirt in exchange for answering a few questions. Quaker Oats reports that the online promotion created product (20) and helped the company know its customers better.

1()

A. brought down

B. brought about

C. brought out

D. brought up

题型:单项选择题

下列不属于血液透析的适应证的是

A.急性肾衰竭

B.慢性肾衰竭

C.急性药物中毒

D.急性毒物中毒

E.腹膜炎

题型:单项选择题

严重或罕见的药品不良反应必须()

A.逐级报告

B.逐级定期报告

C.随时报告

D.越级报告

E.集中报告

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