According to the Spanish researchers, which of the following statements is true?
A. The closer you are to a mobile phone, the greater your exposure to electromagnetic radiation.
B. The closer you are to a mobile phone that is being used to send and receive signals, the greater your exposure to electromagnetic radiation.
C. The amount of electromagnetic radiation reflected by metal is almost too small to be measured.
D. You shouldn"t stand close to people who are using their mobile phones in train carriages, buses, and lifts.
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一位8421BCD码译码器的数据输入线与译码输出线的组合是4:10。()
What does Gottlieb mean when he says, "The beauty of this is we can reach people when theyre out of their homes, moneys in their pockets and stores are still open"?
A. Customers are being influenced to spend money in shops.
B. Cabdrivers are rushing to buy his flat-panel TV screens.
Cabdrivers are watching his TVs.
D. Customers no longer knock their knees as they get into the taxis.