市和区、县总工会可以建立法律服务机构，为（）提供法律服务。 ["产业工会","基层工会","工会会员","职工"]
In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the（）. ["saltwater heater shell","second-stage condenser","atmosphere","second-stage flash chamber"]
铝板风管法兰连接采用什么材质的螺栓？
The mere inclusion of an arbitration clause in a bill of lading to which the Hague Rules apply as a matter of contract does not deprive the carrier（）the one year time limit. ["by","to","of","off"]
本业中心型多元化战略是指专业化比率在（）的企业所采取的多元化经营战略。 ["70%以上","70%—95%之间","95%以上","70%以下"]
法兰盘
