请选出句子中不是食物的单词Magazines and sweets are at the checkouts where shoppers have to wait.
A. magazines
B. sweets
C. checkouts
D. shoppers
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请选出句子中不是食物的单词And that is where they see the information about the other services the supermarket offers such as cheap travels or mobilephones.
A. cheap travels
B. mobile phones
C. services
D. information
请选出句子中不表示食物的单词---Good morning. Can I help you?---I’m looking for the tracksuits that are in your sale.
A. tracksuits
B. sale
C. morning
D. help
理想电源之间可以进行等效变换。
A. 对
B. 错
电源等效变换仅对电源内部等效。
A. 对
B. 错