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【单选题】
液压油最重要的性能指标是 ( ) 。A.
密度
B.
可压缩性
C.
粘度
D.
温度
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【简答题】To pr flooding in winter the water flowing from the dam is constantly ________ by a computer. A) graded B) managed C) conducted D) monitored
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【单选题】The term flood current refers to that time when the water ().
A.
is flowing towards the land
B.
is moving towards the ocean
C.
level is not changing
D.
level is rising because of heavy rains
【单选题】To prevent flooding in winter the water flowing from the dam is constantly ____ by a computer.
A.
managed
B.
monitored
C.
graded
D.
conducted
【单选题】To prevent flooding in winter the water flowing from the dam is constantly ______ by a computer.
A.
graded
B.
managed
C.
conducted
D.
monitored
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