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【简答题】
易燃性指含闪点低于( )°C的液体,或经摩擦、吸湿和自发的变化具有着火倾向的固体,着火时燃烧剧烈而持续,以及在管理期间会引起危险的性质。
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举一反三
【简答题】假言命题是由 、 、 三部分组成。
【单选题】W ho is “A Letter to You” written to ?
A.
His mother
B.
His old friend
C.
His teacher
D.
His university
【简答题】通常,向前推挖土石方、平整场地或堆积松散物料时,广泛采用( )作业;傍山铲土或单侧弃土,常采用( )作业:在斜坡上铲削硬土或挖边沟,采用侧铲作业。
【单选题】You should be grateful to your employees, because you wouldn't be＿you are now without them.
A.
why
B.
how
C.
where
D.
which
【单选题】The kind of visa you apply for mainly depends on ______.
A.
what you do to make a living
B.
how rich you are as a visitor
C.
why you visit the country
D.
how long you will stay in the country
【单选题】You can always ___________ your best friend to help you out when you get into trouble.
A.
hope
B.
expect
C.
wish
D.
rely
【单选题】You should work for __________ if you become an editor of the magazine.
A.
just nine hours a day
B.
no less than nine hours a day
C.
about ten hours a day
D.
less than 25 hours a week
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