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【判断题】
易燃固体是指容易燃烧的固体,通过摩擦引燃或助燃的固体。
【单选题】
.遇水放出易燃气体的物质能发生燃烧的条件是( )。
【判断题】
危险化学品,包括爆炸品、压缩气体和液化气体、易燃液体、易燃固体、自燃物品和遇湿易燃品、氧化剂和有机过氧化物、有毒品和腐蚀品等。( )
【单选题】
叶的生长首先是纵向生长,其次是横向生长。
【判断题】
本可燃或易燃,会放出氧气引起或促使其他物质燃烧的液体称作氧化性液体。
【单选题】
气体的热导率低于固体和液体,因此可用来保温或隔热( )。
【单选题】
My tutor ( ) me to take the time to read at least ten books on the list.
【单选题】
She reminded him ( ) the last time they had met.
【单选题】
Time is your most ( ) resource, especially in examination.
【单选题】
( ) smoking do harm to our health?
【单选题】
We were too tired to ( ) the interesting conversation.
【单选题】
Schools should ( ) childrens interest in sports to instill into them the values of teamwork and sportsmanship.
【单选题】
Human beings are ( ) of using language.
【单选题】
The work failed to meet their ( ) standards.
【单选题】
Reading plays a critical role ( ) improving people’s cultivation.
【单选题】
She was ( ) the Nobel Prize in Physiology or Medicine.