通风空调工程按不同的使用场合和生产工艺要求，大致可分为哪几部分？
Under normal operating conditions, the rudder is hydraulically locked unless （）. ["the manual trick wheel is engaged for steering","the variable stroke pump is off stroke","a rudder order is given by the control system","an electric power system failure occurs at the steering gear"]
The master（）in delivering the goods to the consignee named in the bill of lading on production thereof，or to the first person who presents a properly indorsed bill of lading. ["justifies","justified","is justifying","is justified"]
随着信息化时代的到来，计算机网络技术的发展给现代会议也带来了新的形式。如（）、（）、（）等就属于新的会议形式。
Saltwater is typically provided to a refrigeration system to （）. ["cool the expansion valve","prevent refrigerant superheating","condense the refrigerant gas","prevent motor overheating"]
所谓立体策划是指一种带有（）和（）的策划方案。
