养护温度(t)对混凝土强度发展的影响是( )。 A．t愈高，早期、后期强度均高 B

关于发布广告，下列描述不正确的是（）

A.广告是内部招募最常用的方法之一

B.通常的作法是在一些大众媒体上刊登出单位岗位空缺的消息，吸引对空缺岗位感兴趣的潜在人选应聘

C.工作空缺的信息发布，能够在一两天内就传达给外界

D.有广泛的宣传效果，可以展示单位实力

操作系统是计算机系统的一种系统软件，它以尽量合理、有效的方式组织和管理计算机的【 】，并控制程序的运行，使整个计算机系统能高效运行。

Students will need to use all of their skills in order to understand the reading selections in Reader's Choice. 小题1: These selections provide practice on employing different reading skills to get the message of the writer. They also give students practice in four basic reading skills: skimming, scanning, reading for thorough comprehension, and critical reading. 

Skimming involves reading quickly through a text to get an overall idea of its contents. This kind of rapid reading is suitable when you are trying to decide if careful reading is desirable or小题2:

Like skimming, scanning is also quick reading. However, in this case the search is more concentrated .小题3: When you read to find a particular date, or number you are scanning. 

Reading for thorough comprehension is carefully reading in order to understand the total meaning of the passage. At this level of comprehension the reader is able to summarize the author's ideas.小题4:

Critical reading demands that a reader makes judgments about what he or she reads. This kind of reading requires posting and answering questions such as “小题5:”  "Do I share the author's point of view?" and "Am I convinced by the author's arguments and evidence?”

A．Does my own experience support that of the author?

B．Reader’s Choice is one of the most popular magazines in the world.

C．But he has not yet made a critical evaluation of those ideas.

D．The book contains many types of selections on a wide variety of topics.E. To scan is to read quickly in order to find out specific information.

F. Do I know about the author?

G. when there is no time to read something carefully.

呕吐最常见于何病

A．急性胃炎

B．心源性呕吐

C．幽门梗阻

D．尿毒症

E．颅脑疾病

分析小屋基础平面标高应高于场地建筑自然水平标高，具体高度根据（）而定，一般高度为10～15cm。

A、当地降雨量

B、周围设施

C、疏排水情况

D、区域防爆要求