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【单选题】
通风机日常维护保养要求做到()。A.
保持轴承润滑良好,温度不超过65℃
B.
保持冷却水畅通,出水温度不超过℃
C.
注意风机有无杂音、振动,地脚螺栓和紧固件是否松动,保持设备清洁,零部件齐全
D.
以上三种要求
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举一反三
【单选题】feature of Bitcoin, a new type of electronic money, that make it attractive as a medium of exchange is
A.
anonymous transactions.
B.
volatility of value.
C.
heavy regulations by the central bank.
D.
wide acceptance by businesses.
【简答题】Given the advantages of electronic money, you might think that we would move quickly to the cashless society in which all payments are made electronically. 1 a true cashless society is probably not ar...
【单选题】Which of the following pairs of terms is identical in meaning?
A.
Electronic money and coin.
B.
Coin and paper money.
C.
Electronic money and funds-transfer.
D.
Physical money and electronic money.
【单选题】A feature of Bitcoin, a new type of electronic money, that make it attractive as a medium of exchange is
A.
anonymous transactions.
B.
volatility of value.
C.
heavy regulations by the central bank.
D.
wide acceptance by businesses.
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