a stove and a forced air furnace are all convection heaters. A quartz heater on the other hand heats the objects and people in the room without heating the air. It does this by producing radiation heat that travels like light waves. When the quartz...
【答案】B He needs a vehicle to be used in harsh weather. 【解析】男士说到truck需要operate for long periods of time in very cold temperatures,因此选择选项B。very cold temperatures对应harsh weather. 15. What do we learn about the woman?
those selected people will do most of the work for them. The theory also seems to explain the sudden and unexpected popularity of people was wearing, promoting or developing whaterver it is before anyone else paid attention. Anecdotal evidence of t...
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