It sounds like a science fiction, but
researchers say it’s a scientific fact: Microscopic organisms dubbed "killer
algae" are paralyzing fish with unknown toxins and then eating away at their
flesh. {{U}}They{{/U}} might be making people sick, too. The name given to this single-cell organism, or dinoflagellate, is Pfiesteria piscimorte—{{U}}literally{{/U}}, "fish killer." It was discovered at North Carolina State University in 1988, but at the same time, few scientists believed in its existence, much less in its highly unusual predatory nature. But ongoing research has led to international acknowledgment of the phenomenon and, recently, research funding. Seemingly {{U}}prompted{{/U}} by an unknown substance secreted by fish, the aggressive creature swims into action. It sends neurotoxins into the water and air, paralyzing a fish’s nervous syste A. many scientists had known dinoflagellate before 1988 B. there had been no such organisms before 1988 C. many scientists were in doubt about the nature of the organism in 1988 D. no scientists knew anything about the organism in 1988 [单项选择]工程监理单位不按照委托监理合同的约定履行监理义务,对应当监督检查的项目不检查或者不按照规定检查,给建设单位造成损失的,应当承担相应的( )。
A. 法律责任 B. 违约责任 C. 赔偿责任 D. 连带责任 [单项选择]Which of the following can be inferred as to the relationship between Ellison's work and political movements of his time
[单选题]标准样品制作的环境条件:照度( )Lx(工作面光照度)。
A.1800---2200 B.1200---1400 C.1400---1600 D.1600---1800 [单选题]国货精品手机类目发布商品不能出现哪些关键字? ( )
A.国产 B.仿机、高仿、1:1、山寨机 C.国货 [单选题].混合性皮肤不容易产生皱纹的部位为()。
A.上眼脸 B.眼部 C.口周 D.面颊 [多项选择]
三、不定项选择题,每题所给的选项中有一个或一个以上正确答案,不答、少答或多答均不得分。
A. 丁对房屋的所有权应子保护 B. 丙有权要求甲承担赔偿其损失的责任 C. 若丁不能清偿到期债务,欲变卖该房以还债,银行在同等条件下有优先购买权 D. 若丁不能清偿到期债务,欲变卖该房以还债,乙在同等条件下有优先购买权 [单项选择]标准木杆和铁杆每增加一号,球杆就()半英寸,杆头及球迷角度就()3度。
A. 短;减少 B. 短;增加 C. 长;增加 D. 长;减少 [多项选择]在我国,兄、姊抚养弟妹的法定条件有()。
A. 兄、姊有负担能力 B. 父母已经死亡或无力抚养 C. 弟、妹尚未成年 D. 弟、妹生活困难或无劳动能力 [多选题]热电偶中间导体定律的应用包括( )等。
A.可用任意材料焊接热电偶 B.有利于热电偶热电极的均匀性 C.可用开路热电偶测量温度 D.用任意导线连接热电偶 [单选题]患者,女性,70岁,乳腺癌晚期.肝转移。患者极度衰弱,宜采取的措施是
A.让患者有尊严地度过余生 B.提供心理疗法 C.不放弃治疗,说服患者配合治疗 D.与家属共同商议治疗方案 E.实施安乐死 [单项选择]下列情形中,教师所在学校、其他教育机构或者教育行政部门不能给予行政处分或者解聘的是()。
A. 故意不完成教育教学任务,给教育教学工作造成损失的 B. 体罚学生,经教育不改的 C. 与同事相处不够融洽的 D. 品行不良,侮辱学生,影响恶劣的 [简答题] 允许速度Vmax>160km/h的正线道岔,轨道静态几何尺寸经常保养容许偏差管理值:轨距为+4,-2mm,水平为5mm,高低为5mm,轨向为(
[单选题]关于赔偿义务机关,下列哪些选项是正确的?
A. 区公安局 B. 区法院 C.区检察院 D.市检察院 E.王某因涉嫌故意杀人被区公安局拘留,后经检察院批准逮捕提起公诉。区法院一审判处有期徒刑2年。王某上诉,市中级人民法院二审改判无罪。王某欲申请国家赔偿。 [判断题]升降人员或升降人员和物料的单绳提升罐笼必须装设可靠的防坠器。()
A.正确 B.错误 我来回答: 提交
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