航空发达国家发达的航空业基于大量的()。 A.设计和经验 B.风洞试验 C.飞行线路

题型:单项选择题

问题:

航空发达国家发达的航空业基于大量的()。

A.设计和经验

B.风洞试验

C.飞行线路

D.生产能力

考点:航空、航天科学技术航空航天概论航空航天概论题库
题型:单项选择题
—Do you often go outing?  
—_____. 

A. Yes, never
B. Yes, sometimes
C. No, ever
D. No, usually 
题型:单项选择题

能看懂说明书是生活中不可或缺的能力,下边方框中展示了某药品的说明书,请你根据说明书的内容,告诉一体重为30kg的小孩每次需服药______ 粒,小孩每天共服药__________g。

题型:单项选择题

在汽车微机系统中,CPU的含义是()。

A、中央处理器

B、模拟量转换器

C、汽车实验数据存储器

D、行驶里程存储器

题型:单项选择题

近一段时间以来,在全国各地多个地方均出现校车超载发生意外的事件,在悲剧面前很多校车依然载着满满一车学生上路,除了安全意识淡薄之外,校车运营成本过高也是学校“顶风作案”的主要原因。有民办学校校车运营的负责人就表示,基本所有学校校车的正常运营都是亏本的,该校有7辆校车,一年亏损7万元。原因是校车运营的投入过大,但是收入仅是学生每月所缴纳的100元交通费。据他介绍,业界普遍采用通过饭堂收入控制校车亏损的做法。其实如何解决校车安全问题,民间曾提出不少解决办法,例如成立统一的校车管理公司,由政府来对校车运营进行专业的管理与规划等等,这些诉求没有在《校车安全条例(草案)》征求意见稿得到表达。但国务院法制办公室于2011年12月11日公布《校车安全条例(征求意见稿)》面向社会各界征求意见。

在解决校车安全问题中,应该注意以下问题()。

A.流动人口的小孩、农村留守儿童占很大比重

B.“黑校车”、“超载校车”多集中于中西部、农村地区、城市外来人口聚集区、城乡结合部

C.校车事故主要发生在义务教育阶段和幼儿园阶段

D.政府加大监管是终极措施

题型:单项选择题

The United States is well known for its network of major highways designed to help a driver get from one place to another in the shortest possible time.Although these wide modem roads are generally (1) and well maintained, with few sharp curves and straight sections, a direct route is not always the most (2) one. Large highways often pass (3) scenic areas and interesting small towns. Furthermore, these highways generally (4) large urban centers, which means that they become crowded with heavy traffic during rush hours, (5) the" fast, direct" route becomes a very slow route.However,there is almost always another route to take if you are not in a hurry. Not far from the (6) new" superhighways", there are often older, (7) heavily traveled roads which go through the countrvside. (8) of these are good two-lane roads ; others are uneven roads curving through the country. These secondary routes may go up steep slopes, along high cliffs, or down frightening hillside to towns (9) in deep valleys. Through these less direct routes, longer and slower, they generally go to places (10) the air is clean and scenery is beautiful, and the driver may have a chance to get a fresh, clean view of the world.

第(2)空应选择()

A.terrible

B.possible

C.enjoyable

D.profitable

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