正确答案: B

＜0

题目：某曲柄的两主轴承在水平平面内位置偏左，曲轴轴线呈左拱形，则其Δ-（）。

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学习资料的答案和解析：

[单选题]从液压拉伸器的结构上看，当活塞的升程超过了其“最大升程”时，会出现（）现象。

活塞底部的泄油孔漏油

[单选题]The crankshaft receives and transmits the full working power of the engine and is subjected to fluctuating （）.

All of the above

[单选题]（） into the cylinder because no fuel can burn （） it.

Air must be admitted；without

[单选题]The speed of the camshaft in a two-stroke/cycle diesel engine, running at 950 RPM, is （）.

950 RPM

[单选题]Camshafts are usually driven by timing gears or （）.

chain drives

[单选题]Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.

feeler gauge

[单选题]A towing vessel’s capability is BEST measured by horsepower，bollard pull，maneuverability and（）.

displacement