正确答案: B

2560mm

题目：某螺旋桨半径为2m，将装于其上的螺距规的水平杆旋转36°时量杆的升程为256mm，其局部螺距为（）。

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学习资料的答案和解析：

[单选题]发动机连续起动次数取决于（）和（）。

空气瓶容积/主机起动性能

[单选题]油润滑艉轴承和艉轴在（）式润滑系统中工作，艉轴（）。

闭/不包铜套

[单选题]The temperature difference between the inlet and outlet temperature of the lube oil cooler in the lubricating system for the diesel engine is generally between （）.

8-10℃

[单选题]The crankcase of many diesel engines are kept under a slight vacuum by the （）.

crankcase exhaust fa

[单选题]If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be（）.

775 RPM

[单选题]One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.

a minimum speed for the engines that limits the minimum speed of the vessel