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搜题
【单选题】
汽车运输产品是一种无形产品，它的第一质量特性是指( )。A.
服务性
B.
完整性
C.
及时性
D.
安全性
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皮皮学刷刷变学霸
举一反三
【单选题】What has NOT been done to the prediction and control of major earthquakes according to the passage?
A.
A great amount of money has been given to research work on earth quake prediction.
B.
Active fault systems have been carefully studied in order to predict an impending earthquake.
C.
Studies of the Rocky Mountain phenomenon has been on the way.
D.
Scientists have found that by using fluid injection techniques, earthquakes can be controlled.