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單項(xiàng)選擇題

Which of the following means normal breathing?

A、apnea
B、braqdypnea
C、dyspnea
D、eupnea

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單項(xiàng)選擇題

（）負(fù)責(zé)確認(rèn)前洗手間、前服務(wù)間無(wú)外來(lái)人無(wú)外來(lái)物，并報(bào)告乘務(wù)長(zhǎng)。“報(bào)告乘務(wù)長(zhǎng)，我所負(fù)責(zé)的區(qū)域內(nèi)清艙完畢，無(wú)外來(lái)人無(wú)外來(lái)物

A.2號(hào)
B．3號(hào)
C．4號(hào)
D．5號(hào)

問(wèn)答題

Suppose a firm in each of the two markets listed below were to increase its price by 30 percent. In which pair would the firm in the first market listed experience a dramatic decline in sales, but the firm in the second market listed would not?
A、oil and natural gas
B、cable television and gasoline
C、restaurants and MP3 players
D、movie theaters and ballpoint pens

答案： B

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