人们使用的燃料按物态可分为固态燃料、液态燃料、气体燃料三大类。
参考答案:对
The book provides tips for Westerners who work in Japanese firms: get together outside the office, find a mentor for support and refrain for practicing Japanese with colleagues on the job.
A.of
B.fro
C.off
D.from
下列物质中,与水作用会发生化学自热着火的是()。
A.金属钠
B.甘油
C.有机过氧化物
D.黄磷