无菌罐黄色过滤器为（）。 A.无菌过滤器 B.压缩空气过滤器 C.蒸汽过滤器

《荀子·儒教》记载：周初“立七十一国，姬姓独居五十三人”。这说明

①周的封国中，周王亲属做诸侯的居多②利用血缘纽带跟分封制度相配合，团结同姓贵族③西周初年民族隔阂严重④利用同姓贵族排斥功臣和先代贵族

A．①②

B．①②④

C．③④

D．④

某车间一窗户面积为20m²，已知室内靠近窗户处的声压级为90dB，靠近窗户处的室内和室外声压级差为15dB，等效室外声源的声功率级应为（）。

A.28dB

B.75dB

C.88dB

D.103dB

《刑法》规定，个人贪污数额在5000元以上不满1万元；犯罪后有悔改表现、积极退赃的，对犯罪人( )。

A．可以减轻处罚或免予刑事处罚

B．应当从轻或减轻处罚

C．应当减轻或免除处罚

D．可以从轻或减轻处罚

经济的繁荣和发展有利于和平力量的壮大；贫困和落后则是国际形势动荡不安的一个重要因素。有效地制止战争，维护和平与稳定的国际环境，归根结底取决于和平力量的经济发展程度。这一论断主要说明

A．和平与发展是当今时代的两大主题

B．发展需要和平，没有和平就没有发展

C．维护和平是发展经济的基本前提

D．发展经济是维护和平的坚实基础

Despite a dramatic increase in the number of people riding bicycles for recreation in Parkville, a recent report by the Parkville Department of Transportation shows that the number of accidents involving bicycles has decreased for the third consecutive year.
Which of the following, if true during the last three years, best reconciles the apparent discrepancy in the facts above

A．The Parkville Department of Recreation confiscated abandoned bicycles and sold them at auction to any interested Parkville residents.

B．Increased automobile and bus traffic in Parkville has been the leading cause of the most recent increase in automobile accidents.

C．Because of the local increase in the number of people bicycling for recreation, many out-of-town bicyclists ride in the Parkville area.

D．The Parkville Police Department enforced traffic roles for bicycle riders much more vigorously and began requiring recreational riders to pass a bicycle safety course.

E．(E) The Parkville Department of Transportation canceled a program that required all bicycles to be inspected and registered each year.