永久中毒是指（）及它们的化合物使合成氨用催化剂中毒以后，不能再恢复活性。
| And researchers say that like those
literary romantics Romeo and Juliet, they may be blind to the consequences of
their quests for an idealized mate who serves their every physical and emotional
need. Nearly 19 in 20 never-married respondents to a national survey agree that "when you marry you want your spouse to be your soul mate, first and foremost", according to the State of Our Unions: 2001 study released Wednesday by Rutgers University. David Popenoe, a Rutgers sociologist and one of the study’s authors, said that view might spell doom for marriages. "It really provides a very unrealistic view of what marriage really is," Popenoe said. "The standard becomes so high, it’s not easy to bail out if you didn’t find a soul mate." The survey points to a fundamental dilemma in which younger people want more from the institution of marriage whi A. It usually involves idealized mates who can serve their every physical and emotional need. B. It may not be realized unless the couple consider carefully about their responsibility and commitment. C. It becomes more unrealistic nowadays than in the past because most people center on romance instead of utility. D. It results from many reasons such as financial reasons, family reunion, and political reasons. [单项选择]血清乳酸脱氢酶不增高的是（）.
A. 急性心肌梗死 B. 恶性肿瘤 C. 慢性支气管炎 D. 肝硬化 E. 骨骼肌损伤 [单选题]在75kV线路上进行带电作业的主要人体安全防护用具是（）
A.A.静电防护服 B.B.屏蔽服 C.C.纯棉工作服 [单项选择]产品使用价值的重要标志是（）
A. 产品外观质量 B. 产品服务质量 C. 产品使用质量 D. 产品质量体系论证 [判断题]车站股道电码化设备的主要任务是保证机车信号在站内正线上能够连续显示地面信号信息，在站内到发线的股道上能够显示地面信号信息。
A.正确 B.错误 [单项选择]患者男性，50岁，主动脉瓣狭窄合并关闭不全病史20余年，突然出现快速心房颤动伴血压下降，应采取的治疗措施是（）
A. 电复律 B. 静注毛花苷C C. 手术换瓣 D. 硝酸酯类制剂 E. 静注呋塞米 [简答题]
某工程公司中标承包一城市道路施工项目，道路总长15km，其中包括一段燃气管线的敷设。工程建设工期很紧。为抓紧时间，该公司很快组成项目经理部，项目部进行了临建。项目部拿到设计院提供的设计施工图决定立即开始施工，监理工程师尚未到场。开工后项目部组织人员编制了施工组织设计，其内容包括工程概况、施工方案、施工进度计划、安全措施、文明施工、环保措施以及辅助配套施工措施几个方面。编制完成后报上级审批，但上级退回要求补充完善。 整个项目实施顺利，在竣工验收前有关部门进行施工技术文件预验收时，发现项目部人员正在补填许多施工过程文件，且施工技术文件不完全。 [问题]
[单选题]下列哪项食物中毒最常见( )
A.亚硝酸盐中毒 B.沙门氏菌中毒 C.毒蕈中毒 D.河豚鱼中毒 [判断题]在检维修、施工、吊装等作业现场应设置警戒区域和警示标志。（ ）
A.正确 B.错误 我来回答: 提交
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