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【单选题】
Some medium and high-speed diesel engines require reduction gear units to provide a useful propeller speedIn most reduction gears, the bull gear ____.A.
must churn the oil in the sump
B.
is connected to the propeller shaft
C.
is driven at the highest RPM
D.
compensates for alignment variations between the engine and pinion gear
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【单选题】The word 'meticulous' in line 24 is closest ir meaning to
A.
careful
B.
significant
C.
appropriate
D.
believable
【简答题】在投影面平行面中,正平面在( )面上的投影反映实形,在( )和 W 面上的投影积聚为一条直线 。(用大写字母回答)
【单选题】The author thinks that Mr. Harris argument______.
A.
appears much too cautious
B.
is appropriately made
C.
echoes that of Mr. Carr
D.
is measured by relevant people
【单选题】What does Girsky think about Ford's possible merger with Volvo?
A.
Practical at an appropriate cost.
B.
Impossible due to the high price.
C.
Necessary at all cost.
D.
Unwise regardless of the cost.
【简答题】在投影面平行面中，正平面在（）面上的投影反映实形，在（）和W面上的投影积聚为一条直线。
【单选题】You've been overworking recently, and you would find a holiday ______.
A.
healthy
B.
appropriate
C.
valuable
D.
beneficial
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