单项选择题

生产经营单位发生液氨泄漏致人中毒事故后，应急救援的首要任务是抢救中毒人员和人员疏散，另外一项重要任务是()。

A.堵塞液氨泄漏点
B.冲洗液氨泄漏点
C.调查液氨泄漏事故原因
D.监测周围空气重氨的浓度
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听力原文： Esperanto is an artificial language designed to serve internationally as an auxiliary means of communication among speakers of different languages. It was created by Ludwig Lazar Zamenhof, a polish Jewish doctor specialized in eye diseases. Esperanto was first presented in 1887. An international movement was launched to promote its usE.Despite arguments and disagreements, the movement has continued to flourish and has members in more than 80 countries. Esperanto is used internationally across language boundaries by at least 1 million people, particularly in specialized fields. It is used in personal contexts, on ' radio broadcasts and in a number of publications as well as in translations of both modern works and classics. Its popularity has spread form. Europe, both east and west, to such countries as Brazil and Japan. It is, however, in China that Esperanto has had its greatest impact. It is taught in universities and used in many translations, often in scientific or technological works. EL POPOLA CHINIO, which means from people's China, it's a monthly magazine in Esperanto and it's read worldwidE.Radio Beijing's Esperanto program is the most popular program in Esperanto in the worlD.Esperanto vocabulary is drawn primarily from Latin, the Roman's languages, English and German. Spelling is completely regular. A simple and consistent set of endings indicates grammatical functions of words. Thus for example, every noun ends in 'o', every adjective in 'a', and basic form. of every verb in 'i'. Esperanto also has a highly productive system of constructing new words from old ones.What does the speaker tell us about Esperanto?A.It was invented by a group of language experts in the year of 1887.B.It is a language that has its origin in ancient Polish.C.It was created to promote economic globalization.D.It is a tool of communication among speakers of different languages.
A.What
B.It
C.
B.It
D.
C.It
E.
D.It
单项选择题
下列生产安全事故案卷资料中，属于现场勘查报告及事故现场勘查材料的是（ ）。
A.事故抢险救援报告
B.事故现场图
C.专家鉴定意见
D.调查询问笔录
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