The sludge tank installed in the diesel engine room is used to collect_______I. sludge from the fuel oil settling tanks and centrifuge; II. Water that has been collected in the settling tank.
【简答题】My name is Ed Smith. I’m 12. I’m 1 Class One. I like (喜欢) ball s. They are 2 . I play ball s every day. I can 3 baseball, tennis, and volleyball. But I can not play 4 . Ping-pong is difficult ...