Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.

[单选题]China adopted the practice of（ ）in customs clearance following the establis

[名词解释] clearance，C

[单选题]Scavenging is （） of exhaust gases by blowing in fresh air.A . the suctionB . the compressionC . the removalD . the deliver

[单选题]Cross scavenging requires the fitting of （） to prevent air or exhaust gas escape when the piston is at the top of the stroke.A . a exhaust valveB . a piston skirtC . a piston crownD . an air suction valve

[单选题]The scavenging air ports are located at （） that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.A . so a heightB . such a heightC . so highD . such high

[单选题]On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as（）A . cooling jacketB . cylinder linerC . piston crownD . cylinder cover

[单选题]If clearance between a piston and the cylinder wall is excessive, piston slap will occur. The slap itself is caused by_____.A．alternation of side thrustB．a breakdown of the lube oil film on the cylinderC．worn piston boss piston pin bearingsD．fluctuat

[单选题]Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）A . closing laterB . opening soonerC . staying open for a shorter period of timeD . staying open for a longer period of time

[单选题]（）is the volume for loading goods of the vehicle.A . Vehicle tonnageB . Vehicle sizeC . Vehicle capacityD . Available vehicle capacity

[单选题]Volume Box指的是（　　）。A.棋盘式准直器B.独立准直器C.孔雀系统准直器D.非独立准直器E.多叶准直器