Space is a dangerous place, not only because of
meteors (流星) but also because of rays from the sun and other stars. The
atmosphere again acts {{U}} (62) {{/U}} our protective blanket on
{{U}} (63) {{/U}}. Light gets through, and this is essential
{{U}} (64) {{/U}} plants to make the food which we {{U}} (65)
{{/U}} . Heat, {{U}} (66) {{/U}}, makes our environments tolerable
and some ultraviolet rays (紫外线) penetrate the {{U}} (67) {{/U}}. Cosmic
(宇宙的) rays of various kinds come {{U}} (68) {{/U}} the air from outer
space, but {{U}} (69) {{/U}} quantities of radiation from the sun are
screened off. As {{U}} (70) {{/U}} as men leave the atmosphere they are
{{U}} (71) {{/U}} to this radiation; {{U}} (72) {{/U}} their
spacesuits or the walls of their spacecraft, if they are inside, {{U}} (73)
{{/U}} prevent a lot of radiation damage. Rad A. get B. have C. make D. do [判断题]目前超级柜台运行离不开前端服务人员的引导和审核,风险防控以人为主。()
A.正确 B.错误 [单项选择]劳神过度易损伤的脏腑是
A. 心肝 B. 肝肾 C. 脾肾 D. 心脾 E. 脾肺 [单选题]按照同步的功用来分,同步可以分为( )和网同步。
A.载波同步 B.位同步(码元同步) C.群同步(帧同步) D.以上都是 [单选题]西门子AzSM350U型计轴系统VAU(数据处理监视板)PAB红灯亮则表明( )
A.程序控制紧急切断 B.计轴复位 C.区段占用 D.区段空闲 [判断题] ( )换热器内部管束泄漏,一般采用气密试验方法进行检查。
A.正确 B.错误 [判断题]作业人员接触职业病危害因素的,应按照单位规定开展职业病防治工作。( )(应知应会-《普速安规》-第3.1.4条)
A.正确 B.错误 [单选题]男,56岁,突然头晕、呕吐8小时。体检:双眼向右水平眼震,右侧指鼻和跟膝胫试验不准,颈轻度抵抗。肌力和感觉检查无明显异常。血压150/90mmHg。临床诊断为
A.蛛网膜下腔出血 B.左大脑基底核区出血 C.右小脑半球出血 D.左小脑半球出血 E.右大脑基底核区出血 [多选题]事故的基本特征是( )。
A.危害性 B.意外性 C.紧急性 D.阶段性 [填空题]在HXD3电力机车两端的顶盖上设置主电机冷却风( )。
[判断题]在暑热夏天贮存闪点高的易燃液体时,必须采取隔热降温措施,严禁明火。
A.正确 B.错误 [简答题]简述传染性非典型肺炎的治疗原则。
[判断题]社会团体不能使用行政事业单位资金往来结算票据收取社会团体会费。
[判断题]试验区域应拉设警戒绳,并悬挂“止步,高压危险”的警示牌。
A.正确 B.错误 我来回答: 提交
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