A four-stroke/cycle, 1000horsepower diesel engine fails to start at normal cranking speed with normal fuel pressure and ambient temperatureThe reason for the failure could be（） ["glazed liners or pistons","high lube oil pressure","excessive compression ratio","worn valve seats and valve"]
造成配电网电压过低的主要因素有哪些？
Any oil tanker which is not required to be provided with segregated ballast tanks in accordance with this paragraph may，however，be qualified as a segregated ballast tanker （）it complies with the other requirements of paragraphs of this Convention. ["provided that","on the part of","nevertheless","notwithstanding"]
工商所干部赵某会同市场管理人员在辖区一农贸巡查时发现市场内一摊位经营户吴某有短斤缺两欺诈违法行为，认为违法事实确凿，就现场制作调查询问笔录后，依照相关法律、法规规定，按简易程序当场对吴某的行为作出了警告和罚款50元的行政处罚，并向吴某出具了一张个人手写的收条，当场收取了罚款。一个星期后，赵某才将该笔罚款上交所财务人员。赵某能否可以当场收缴50元罚款？（） ["可以","不可以","经吴某同意可以"]
络纱时为何要有适当的张力？标准是什么？
在哪些情况不得进行遥控操作？
