[多选题]辖区情况熟悉的方法主要有（）-我要搜题网

The main problem in discussing American popular culture is also one of its main characteristics : it won’t stay American. No matter what it is, whether it is films, food and fashion, music, casual sports or slang, it’s soon at home elsewhere in the world. There are several theories why American popular culture has had this appeal.
One theory is that it has been "advertised" and marketed through American films, popular music, and more recently, television. {{U}} (46) {{/U}}. They are, after all, in competition with those produced by other countries.
Another theory, probably a more common one, is that American popular culture is internationally associated with something called "the spirit of America". {{U}} (47) {{/U}} The final theory is less complex: American popular culture is popular because a lot

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[单选题]下列选项中，属于有限空间许可人职责的是（）。
A.检查施工单位是否具备测试仪、通风设备及个人防护用品
B.审核进入有限空间工作的必要性
C.与监护者进行有效的信息沟通

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[单项选择]关于胆红素的代谢，下列叙述哪一项是正确的（）
A. 血中胆红素升高，巩膜均有黄染
B. 胆红素主要来源于骨髓幼稚红细胞
C. 非结合胆红素与白蛋白结合输送，经肾小球滤过
D. 正常情况，尿中无尿胆原
E. 尿胆原大部分氧化为尿胆素

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[单项选择]21-25

For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic. Columbus went west to look for better trade routes to the Orient and to promote the greater glory of Spain. Lewis and Clark journeyed into the American wilderness to find out what the U.S. had acquired when it purchased Louisiana, and the Appolo astronauts rocketed to the moon in a dramatic show off technological muscle during the cold war.
Although their missions blended commercial and political-military imperatives, the explorers involved all accomplished some significant science simply by going where no scientists had gone before.
Today Mars looms (隐约出现) as humanity’s next great terra incognita (未探明之地). And with doubtful prospects for a short-term financial return, with the cold war a
A. To find out if life ever existed there.
B. To see if humans could survive there.
C. To prove the feasibility of large-scale space ventures.
D. To show the leading role of science in space exploration.

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[判断题] 在四显示自动闭塞区段的进站信号机前方第一、第二架通过信号机的机柱上,应分别涂一条、三条黑斜线,以与其他通过信号机相区别。()
A.正确
B.错误

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[单项选择]采用工程量清单计价，一般应该采用( )的合同形式。
A. 固定价格合同
B. 成本加酬金合同
C. 总价合同
D. 单价合同

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[判断题]医务人员社区内协助或实施核酸采样时，或在封控社区内进入阳性病例住宅楼栋内及楼栋周边物理隔离区工作时，采用二级防护。（）
A.正确
B.错误

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[判断题]执行CRJ900NG机型（2 人制）乘务员失能，紧急撤离程序介绍防冲击姿势，客舱乘务员操作预录广播，预录失效寻求援助者播报广播；面向机尾站于1排进行演示；无需对特殊旅客进行确认。
A.正确
B.错误

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[简答题]问题同上

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[多选题]信息安全包括哪几个方面？（易）（基础知识）
A.保密性
B.真实性
C.完整性
D.未授权拷贝
E.系统的安全性。