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【单选题】

电饭锅由外壳、内锅、锅盖、加热器、( )等主要部件组成。

A.
磁控管
B.
温度控制装置
C.
离合器
D.
压力开关
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参考答案:
参考解析:
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【单选题】Most shoppers know the feeling. You stand in front of piles of organic produce and wonder what those premium prices are buying you over and above what you get from standard foods. Not a lot nutrition-...

A.
do not use naturally produced fertilisers
B.
produce carbon dioxide when removing weeds
C.
use high doses of weed-killer
D.
use too many resources to qualify for organic status

【多选题】⾼压加热器分为()

A.
混合式
B.
表⾯式
C.
对流式
D.
逆流式