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【单选题】
烟头中心温度可达()，它超过棉，麻，毛织物，纸张，家具等可燃物的燃点，若乱扔烟头接触这些可燃物，容易引起燃烧，甚至酿成火灾。A.
100-200℃
B.
200-300℃
C.
700-800℃
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反馈参考答案：
举一反三
【单选题】当用生产可能性曲线来表现经济增长时,应该( )
A.
向内移动生产可能性曲线
B.
向外移动生产可能性曲线
C.
保持生产可能性曲线不变，以原点为中心画圆
D.
从原点出发画一条与生产可能性曲线的连线
【单选题】The first, obvious one is that the of innovation is too fast for consumers.
A.
portion
B.
pace
C.
ideal
D.
comment
【判断题】The shortcoming of the first-person narration is too objective to make the reader have a close relation with the work.
A.
正确
B.
错误
【判断题】If the ailerons or spoilers are not movable, the Captain and the First Officer can use the force exerted to their respective control wheels to find outwhether ailerons or spoilers is available and whi...
A.
正确
B.
错误
【单选题】当用生产可能性曲线来表现经济增长时,应该
A.
向内移动生产可能性曲线
B.
向外移动生产可能性曲线
C.
持生产可能性曲线不变，以原点为中心画圆
D.
出发画一条与生产可能性曲线的连线
【单选题】What is indicated about the first-prize entry?
A.
The design would make a product too costly.
B.
The design was excessively modern.
C.
It was considered practical in concept.
D.
It was designed by a college student.
【简答题】A．The first car they saw is too expensive. B．They may save some money for the time being. C．She is happy with the price set by the seller. D．Less money win be spent in the lung run.
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