提高电解槽的使用寿命,能够提高电解生产的各项经济指标,降低()费用,从而提高企业的经济效益。
参考答案:大修
My brother _______ the army two years ago.He has ______ for two years.
A.joined in ; joined
B.joined ; been a soldier
C.joined in ; become a soldier
D.joined; joined in
根据一体化战略,汽车企业与销售商形成的一体化是()
A、前向一体化
B、后向一体化
C、水平一体化
D、销售一体化