clearance，C

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

[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]Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.A . during the valve overlap periodB . with only the exhaust valve openC . at a pressure below atmosphericD . without cooling the cylinders or pisto

[名词解释] 英译中：Customs clearance

[名词解释] 英译中：Electronic clearance

[问答题] 预检（Pre-clearance）

[问答题] 简述建筑接近限界 approaching clearance。

[问答题] 简述机车车辆限界 clearance of locomotives and vehicles。

[单选题]China adopted the practice of（ ）in customs clearancefollowing the establish