| The first moving-picture theater was
probably the work of Harry Davis, Pittsburgh’s most prosperous showman. In 1904,
he rented a storefront, filled the room with chairs, gaily decorated the
exterior, and advertised the{{U}} (67) {{/U}}of a "nickelodeon". It was
a(n){{U}} (68) {{/U}}success. Although Davis was the first one to use the name nickelodeon,{{U}} (69) {{/U}}experiments were taking place in other parts of the country.{{U}} (70) {{/U}}the country, vaudeville (杂耍) managers, traveling exhibitors, and show businessmen{{U}} (71) {{/U}}their jobs to set up their own nickel picture{{U}} (72) {{/U}}. There was a great deal of money{{U}} (73) {{/U}}in the business, but nickelodeon owners had to work hard to{{U}} (74) {{/U}}their product. They could not afford to advertise{{U}} (75) {{/U}}in the papers, but they could and{{U} A. encouragement B. disappointment C. excitement D. depression [判断题]埋地管道上形成的宏腐蚀原电池一般距离较短。( )
A.正确 B.错误 [单项选择]下列疾病可引起咯血，但除外（）
A. 肺结核 B. 肺炎 C. 支气管内膜结核 D. 风湿性心脏病二尖瓣狭窄 E. 支气管哮喘 [单选题]本质安全型电气设备的安装，在 0 区，设计人员应选用( )级设备，并且优先使用本质安全型电路与非本质安全型电路之间有电流隔离措施的关联设备。
A."ib" B."ia" C."ma" D."mb" [判断题]单相异步电动机定子绕组接通交流电源后也会产生旋转磁场。( )
A.正确 B.错误 [单选题]在进行倒负荷或解、并列操作前后，应检查相关电源运行及(____)情况。
A.保护投入 B.变压器运行 C.设备运行 D.负荷分配 [判断题]仪表气储罐的体积为120m³（ ）
A.正确 B.错误 [多选题]工业上常用的Y型弹簧管压力表的精确度等级分为( )级。[1.0分]
A. 1 B. 1.5 C. 2 D. 2.5 E. 5 [多选题]根据《恶臭污染物排放标准》，下列关于恶臭污染物厂界标准值分级的说法，正确的有（ ）。
A.一类区内新建项目执行一级标准 B.二类区内新建项目执行二级标准 C.一类区内1990年建成投产的项目执行一级标准 D.二类区内1990年建成投产的项目执行二级标准 [填空题]
A. What happened —I didn’t sleep a wink last night. [单选题] 依据《生产安全事故应急预案管理办法》,生产经营单位应当制定本单位的应急预案演练计划,根据本单位的事故风险特点,()至少组织一次综合应急预案演练或者专项应急预案演练。
A.每3.个月 B.每6.个月 C.每1.年 D.每2.年 我来回答: 提交
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