题目内容

一般标签最好贴在商品正面的右上角。

A. 对
B. 错

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收银员在每笔交易时必须唱总、唱收、唱零。

A. 对
B. 错

What is used to receive information for smart home?

A. Central processor unit
B. Integrated wiring
C. Network communication
D. Safety precaution technology

The characteristics of a smart home can be as follows except____________.

A. safe
B. comfortable
C. noisy
D. efficient

公路运输的优点?

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