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If good intentiIf good intentions and good ideas were all it took to save the deteriorating atmosphere, the planet’s fragile layer of air would be as good as fixed. The two great dangers threatening the blanket of gases that nurtures and protects life on earth--global warming and the thinning ozone layer--have been identified. Better yet, scientists and policymakers have come up with effective though expensive countermeasures. But that doesn’t mean these problems are anywhere close to being solved. The stratospheric ozone layer, for example, is still getting thinner, despite the 1987 international agreement known as the Montreal Protocol, which calls for a phaseout of chlorofluorocarbons (CFCs) and other ozone-depleting chemicals by the year 2006. CFCs--first fingered as dangerous in th A. rich countries fail to come up with money. B. chemicals are brought under control. C. industries have turned to safer substances. D. threatening dangers have been noticed. [单项选择]以下哪项不是新生儿窒息的病因()
A. 脐带血流受阻 B. 颅内出血 C. 分娩时用麻醉剂过量 D. 子宫、胎盘血流障碍 E. 患妊娠高血压综合征 [单选题]北海的两字代码是( )
A.BH B.KEL C.BYH D.BHY [判断题]居民区和交通道路附近立、撤杆,应设警戒范围或警告标志,并派人看守。
A.正确 B.错误 [单选题]变电站(发电厂)第二种工作票可采取电话许可方式,但应录音,并各自作好记录。采取电话许可的工作票,工作所需安全措施可由工作人员自行布置,工作结束后应汇报( )。
A.A.工作负责人 B.B.工作签发人 C.C.工作许可人 D.D.监护人 [单选题]红色光照在红色物体上,颜色( )(单选题)
A. 不变 B. 更红艳 C. 变浅亮 D. 变暗 [名词解释]合面横嵴与斜嵴
[单选题]生产经营单位内部一旦发生危险化学品事故,单位负责人必须立即按照本单位制定的()组织救援。
A.工作计划 B.控制措施 C.应急救援预案 D.方针目标 [单选题]男性,45岁,肝炎病史20余年,近2月来出现右侧季肋部持续胀痛,伴厌食、乏力和腹胀。查体:右侧肋缘下可触及到肿大的肝脏,质地坚硬,边缘不规则;AFP>1000μg/L。有确定诊断意义的检查是
A.肝功能检查 B.CT C.MRI D.肝穿刺针吸细胞学检查 E.选择性肝动脉造影 [判断题]润滑油能起密封作用。 ( )
A.正确 B.错误 [单项选择]()种配送模式中,连锁企业的物流活动完全由第三方的专业物流公司来承担。
A. 企业自营配送 B. 社会化配送 C. 供应商直接配送 D. 共同配送 [填空题]水玻璃的模数越大,则水玻璃的粘度越()。
[多选题]急性白血病治疗原则包括() ? ( 1.0 分)
A.防治感染 B.纠正贫血 C.控制出血 D.抗生素治疗 E.骨髓移植术 [判断题]人民军队区别于其他一切军队的基本标志就是,不仅是战斗队,而且也是工作队和生产队。( )
A.正确 B.错误 我来回答: 提交
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