过直轴后，应对转子再做什么试验和调整？
参考答案：
应对转子进行低速找平衡。
填写适当的介词
(l)The engineer died _______overwork.
(2)The man died________ hunger and cold.
(3)Liu Hulan died_________ the people.
面状构造可由矿物组分的分层、（）、（）等表现出来。
