SHLR正确的数据备份方式为（）。 ["将*.stp和*.dbf文件拷贝到相应的目录下","通过数据导入导出工具进行数据备份","通过MML命令BKPDB进行数据备份","通过SQL的企业管理器，选取相应的数据库进行数据备份"]
天然气脱硫法中，（）兼有化学吸收和物理吸收作用，为重要的天然气净化方法，这种方法能脱除天然气中的有机硫化物。 ["砜胺法","一乙醇胺法","多二乙醇二甲醚法","冷甲醇法"]
男士头发应注意（）。 ["前不及眉","旁不遮耳","后不触领","不留长发","不留大鬓角"]
1983年，今村昌平翻拍木下惠介的（）和他指导的《鳗鱼》均获得戛纳电影节金棕榈奖，使他成为迄今为止亚洲唯一一位两度获此殊荣的导演。 ["蒲公英","青春残酷物语","楢山节考","官能王国"]
Which of the problems listed represents the major difficulty encountered with thermal expansion valve operation?（） ["Lube oil passing through the system","Moisture or foreign matter collecting at the valve seat and orifice","Variable spring tension caused by the changing temperature","Frost on the liquid line"]
什么是压力势？
