试题与答案

离心泵运转时最大危害是()。A、喘振 B、断电 C、气蚀 D、撞缸

题型:单项选择题

题目:

离心泵运转时最大危害是()。

A、喘振

B、断电

C、气蚀

D、撞缸

答案:

参考答案:C

试题推荐
题型:单项选择题

NET is both a business strategy from Microsoft and its (71) of (72) support for what are known as Web services, the ability to use the Web rather than your own computer for various services. Microsoft’s goal is to provide individual and business users with a (73) interoperable and Web-enabled interface for applications and computing devices and to make computing activities increasingly Web browser-oriented. The .NET (74) includes servers; building-block services, such as Web-based data storage; and device software. It also includes Passport, Microsoft’s fill-in-the-form-only-once identity (75) service.

A.verification

B.valid

C.validate

D.validation

查看答案
题型:选择题

时下,在广告市场上,个别企业采用篡改古诗成语的方式追求广告效应,如“但愿人长久,千里共婵娟“改为“但愿人长久,相伴×××。”“刻不容缓”改为“咳不容缓”。对此理解正确的是

①传媒的商业性会引发文化的负面效应 ②文化市场需要加强管理、正确引导

③企业在追求经济效益时,还应承担社会责任 ④这是对中华传统文化的继承与发展

A.②③④

B.①②③

C.①③④

D.①②④

查看答案
微信公众账号搜索答案