照明设备可能会出现无法与指定配电柜形成系统的情况，可能是什么原因造成的（） A.配电

串级控制回路中，（）的输出，作为副回路的给定

填入下面语段中横线处的词语，正确的一项是[ ]

　　诗人沿用古代民歌中常见的复沓形式，展示丰富的想象，着力描绘了由________入________道路上惊险绮丽的山川风光，展示了祖国壮丽河山的千姿百态，为大自然奏响了一曲________的赞美乐章。同时以山川的险要告诫世人，含蓄地表达了诗人对社会某些现象的________。

A．秦 蜀 气势磅礴 忧虑与关切

B．蜀 秦 气势磅礴 忧伤与无奈

C．秦 蜀 气贯长虹 忧虑与关切

D．蜀 秦 气贯长虹 忧伤与无奈

三阴交、中极、次髎三穴同用，多用于治疗（）

A.月经先期

B.月经后期

C.月经先后不定期

D.痛经实证

E.血枯经闭

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.

19（）

A.customers

B.addicts

C.participants

D.marketers

酮体