急性龋的临床表现为（） A.多见于中、老年人 B.病变进展较平稳 C.龋坏牙本质着色

various       

A．programme

B．distance

C．pattern

D．parent

一般认为引起子宫颈癌发生的因素有________、________和____________等。

预防粘附卡钻可以在钻井液中混油或加入润滑剂，（）泥饼摩擦系数。

A、增加

B、降低

C、聚结

D、聚合

Because postage rates are rising, Home Decorator magazine plans to maximize its profits by reducing by one half the number of issues it publishes each year. The quality of articles, the number of articles published per year, and the subscription price will not change. Market research shows that neither subscribers nor advertisers will be lost if the magazine’s plan is instituted. Which of the following, if true, provides the pest evidence that the magazine’s profits are likely to decline if the plan is instituted

A．With the new postage rates, a typical issue under the proposed plan would cost about one-third more to mail than a typical current is, sue would.

B．The majority of the magazine’s subscribers are less concerned about a possible reduction in the quantity of the magazine’s articles than about a possible loss of the current high quality of its articles.

C．Many of the magazine’s long-time subscribers would continue their subscriptions even if the subscription price were increased.

D．Most of the advertisers that purchase advertising space in the magazine will continue to spend the same amount on advertising per issue as they have in the past.

E．(E) Production costs for the magazine are expected to remain stable.

2012年5月8日，商务部发布公告称，将对原产于欧盟和日本的进口相关高性能不锈钢无缝钢管实施临时反倾销措施，要求对相关企业征收9.7%～39.2%不等的保证金。商务部调查认为，中国相关高性能不锈钢无缝钢管产业受到了实质损害，自5月9日起，上述裁定结果将开始实施。这表明（）

A.我国政府坚定地维护自己的国家利益

B.我国尊重其他国家的正当利益

C.当前国际关系中的竞争日益激烈

D.维护国家利益是我国外交政策的宗旨