车厢内配电柜的种类有()、()、()、()。
最早在中国设立私人银行的中资银行是哪一家()。 ["工商银行","农业银行","中国银行","建设银行"]
怎样可以打破“设计垄断”的局面?
产品规范包含哪些内容?
According to Annex I of MARPOL 73/78, oily waste from cargo tanks of oil tankers can be discharged when the ship is more than()away from the nearest land. ["50 nautical miles","30 nautical miles","15 nautical miles","12 nautical mile"]
空调排水管路清洁作业时,应对(),()进行清洗疏通,对()进行清理,确认其作用灵活、不卡滞。