| After a busy day of work and play, the
body needs to rest. Sleep is necessary for good health. During this time, the
body recovers from the activities of the previous day. The rest that you get
while sleeping enables your body to prepare itself for the next day. There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other. Although your mind slows down, from time to time you will dream. (10) {{U}}Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly (although your eyelids are closed).{{/U}} This stage of sleep is called REM, which stands for r A. sick B. stand up C. asleep D. a little sleepy [单选题]Ammonia Inhalants是 ( )。
A.消毒水 B.清醒剂 C.止痛药 D.止痉药 [单项选择]驾驶机动车在高速公路遇到能见度低于50米的气象条件时，车速不得超过20公里/小时，还应怎么做？
A. 进入应急车道行驶 B. 尽快驶离高速公路 C. 在路肩低速行驶 D. 尽快在路边停车 [单选题]利用中断燃烧链反应的原理,往着火物上直接喷射气体、干粉等灭火剂,履盖火焰,中断燃烧等。这样的灭火方法称之为( )。
A.冷却法 B.室息法 C.隔离法 D.抑制法 [单项选择]数码相机与传统光学相机的根本不同之处是它的成像原理不同，它使用的成像的芯片可以是( )。
A. CCD B. CMOS C. CCD或CMOS D. Flash Memroy [单选题] 1982 年,为了争取和平、寻求建立更均衡的对外关系,中国政府把反对霸权主义、( )、加强同第三世界的团结合作,作为时期基本的对外方针。
A. 和平共处 B. 构筑世界新秩序 C. 维护世界和平 D. 抛弃冷战思维 [单选题]危化品运输车灾害事故处置指南遵循什么处置理念？
A.“专业、高效” B.“安全、稳定” C.“科学、专业、安全、环保” D.“专业、高效” [单选题]与认购、认沽期权价值均正相关的是(??)。
A.标的资产波动率 B.执行价格 C.无风险利率 D.到期时间 [判断题]检修（施工）单位的工作票签发人、工作负责人名单应事先送设备运维管理单位、调度控制中心备案
A.正确 B.错误 我来回答: 提交
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