[判断题]安全标志的分类为禁止标志、警告标志、指令标志、提示标志四类，-我要搜题网

[不定项选择题]共用题干 The world has got rainforests which cover 7% of the earth's surface.They grow around the earth's equator in South America,Central America,Africa,Southeast Asia,and Australia. Rainforests are important.(46)______.These rainforests are wet and warm.They get more than two meters of rain each year,and temperatures are usually between 24℃and 27℃．(47)______. Each area has a different environment with different plants,trees and animals.
(48)______.Every day a part of the rainforest,the same size as a football field,is destroyed because of human activities.(49)______,people cut down trees to make plantations to grow food,to get minerals or metals out of the ground or to build more and more houses.(50) ______.Cutting down trees must be prohibited and wild animals must be protected.If people break these rules,they must be arrested and severely punished. _________（50）
A.Therefore strict measures must be taken
B.They give the earth oxygen,and are the home for half of the world's animals and plants
C.Because of a growing population
D.Unfortunately,these rainforests are in danger
E.Tropical rainforests are home to tribal peoples who rely on their surroundings for food,shelter,and medicines
F.They are divided into four different areas

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[单选题]甲某养的宠物因通过墙边鸡窝翻过院墙，蹿入邻居院内并咬伤邻居一个5岁的小孩，根据《民法通则》的规定，对此损害承担民事责任的（）。
A.是甲某
B.是小孩的家长
C.是甲某和小孩的家长
D.不是甲某也不是小孩的家长

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[单项选择]

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Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their space suits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.
Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to b
A. is insignificant
B. seems overestimated
C. is enormous
D. remains unknown

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[填空题]4G鉴权参数中用于加密的参数是（英文缩写）。

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[填空题]CRH1型车动车组司机室门由基础部件、门扇部件、三大部件组成。

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[单项选择]防治室性早搏或阵发性心动过速的首选药物是（）
A. 利多卡因
B. 氯化钙
C. 阿托品
D. 碳酸氢钠
E. 溴苄胺

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[单选题]（）类包装的危险货物包装强度要求最高
A.I
B.II
C.III
D.IV
E.IV

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[单项选择]（）可按水平投影面积以平方米计算。
A. 砖砌台阶
B. 花池
C. 阳台栏板
D. 楼梯栏扳

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[单选题] 用火申请时( )对风险评估结果及风险消除削减控制措施是否合适进行审核。
A.:申请人;
B.批准人;
C.申请者和批准人;
D.:监护人。

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[判断题]安全标志的分类为禁止标志、警告标志、指令标志、提示标志四类，还有补充标志。（）
A.正确
B.错误

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[判断题]安全标志的分类为禁止标志、警告标志、指令标志、提示标志四类，还有补充标志。（ ）A.正确B.错误

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[判断题]安全标志的分类为禁止标志、警告标志、指令标志、提示标志四类，还有补充标志。（）
A.正确
B.错误