经检定的燃气计量器具，误差超过法定范围的，由（）支付检测费。 ["用户","委托方","检测机构","管道燃气企业"]
We usually choose cargo-handling equipment according to（）. ["the ship type","the port's organization","the cargo's nature","the dockers’ ability"]
The air required for combustion is taken from the engine room through a filter fitted on the turbochargerThis reduces the risk for too and contamination of the combustion air（） ["high temperatures","low temperatures","wet","dirty"]
下列哪项是必不可少的项目要素（） ["质量","时间进度","组织结构","费用"]
银保通业务可实现（）功能。 ["新保业务功能","保险资金批量代收、代付功能","犹豫期退保功能","保险理赔业务功能"]
什么叫非线性元件？什么叫非线性电路？
