[单选题]China adopted the practice of( )in customs clearance following the establis
[名词解释] clearance,C
[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
[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
[判断题] 施工中的三检制为预检、自检、互检。A . 正确B . 错误
[单选题]到达列车预检是指()货运检查员应出场立岗预检。A .、列车停妥前 B .、列车进站时 C .、列车到达前5min D . D.、接受计划时
[名词解释] 英译中:Customs clearance