Lubrication for the main reduction gears used with diesel en

【名词&注释】

静脉滴注(intravenous drip)、肌肉注射(intramuscular injection)、硫酸庆大霉素(gentamycin sulfate)

[单选题]Lubrication for the main reduction gears used with diesel engines is usually supplied by

A. oil from the main engine sump
B. an independent lube oil system
C. the stern bearing head tank
D. the stem bearing sump tank

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举一反三：

[单选题]容易引起锅炉炉膛燃气爆炸的是( )。

A. 烟道着火
B. 过剩空气系数太大
C. 过剩空气系数太小
D. 供油系统向炉膛内漏油

[单选题]硫酸庆大霉素不宜用于()

A. 静脉滴注
B. 肌肉注射
C. 静脉推注

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