1. [单选题]When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for work
A. remains the same
B. is reduced
C. is increased
D. is eliminated
2. [单选题]干洗增压器涡轮在( )。
A. 全负荷时效果最好
B. 全负荷时效果最差
C. 低负荷时效果最好
D. 50%负荷时效果最好
3. [单选题]检疫官员
A. chief engineer
B. sanitary officer
C. second engineer
D. third enginer
