规模经济是指生产单位产品的成本随生产规模的增加而（）。
街面交通管理时，如何做到允许申辩不动怒？
The control rod of a steering gear pump is attached at its outer end to （）. ["the hunting gear","the rudder stock","the rudder controller","the feedback unit"]
The disadvantage of using a heaving line to pass a towline is that（）. ["it increases the likelihood of collision between the towing vessel and the disabled vessel","recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towline","the monkey fist may injure someone","it may reduce the catenary and increase yawing"]
（）是指减少公司在某一特定领域内的投资。
滑块调整及装模高度批示器的作用是什么？
