A crankshaft whose center of gravity coincides with its center line is said to be （）.

[单选题]If the vertical center of gravity (VCG) of a ship rises 1.7 feet，the righting arm (GZ) for the various angles of inclination will（）.A . decreaseB . increaseC . remain unchangedD . be changed by the amount of GG' x cosine of the angle

[单选题]The crankshaft deflection is at first to be （） before and after repair.A . disassembledB . renewedC . measuredD . regulated

[单选题]What is the speed of the crankshaft in a four-stroke/cycle engine when the camshaft is turning at 750 rpm?（）A . 375 RPMB . 500 RPMC . 750 RPMD . 1500 RPM

[单选题]When a crankshaft （） outside the engine, it should be carefully supported in a manner which will avoid imposing high bending moments on it.A . has to be handledB . may be handledC . has being handledD . will be handling

[单选题]The crankshaft of diesel engine is supported by （）.A . tension stretchB . tie rodsC . through boltsD . main bearing

[单选题]The crankshaft receives and transmits the full working power of the engine and is subjected to fluctuating （）.A . bending stresses弯曲应力B . torsion stresses扭转应力C . shear stresses剪应力D . All of the above

[单选题]The crankshaft is of the semi built type, with the journal （） the forged or cast steel crank throws.A . being shrunk intoB . to be shrunk intoC . to be shrunk withD . shrinking into

[单选题]（） of an engine crankshaft can be detected by measuring deflections of crank webs for each unit of the engine.A . MisalignmentB . LengthC . StrengthD . Stresse

The word “gravity” in the sentence “The pig brought gravity and mythic import to

[单选题]When a crankshaft has to be handled outside the engine, it should be carefully supported in a manner which will avoid （） high bending moments on it.A . compressingB . interposingC . imposingD . pounding