照明系统中，每一单相回路不宜超过20A，灯具数量不宜超过25个。()
A. 正确
B. 错误
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A. present a positive image to prospective customers
B. support its employees with children to take care of
C. attract young people with IT expertise to work for it
D. reduce operational expenses of a second office
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A. more employees work to full capacity at home
B. employees show a growing interest in small businesses
C. more businesses have adopted remote working solutions
D. attitudes toward IT technology have changed
What is Neil Stephenson’s advice to firms contracting internet services？
A. They look for reliable business-only providers.
B. They contact providers located nearest to them.
C. They carefully examine the contract.
D. They contract the cheapest provider.
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