clearance between the top of the valve stem and the rocker arm
compression of the valve springs
clearance between the valve seat inserts and the head
out of roundness of the fuel injection cams
第1题：
This Certificate will remain in force until May 1,1989.________.
A.This Sentence refers to the validity of the Certificate
B.This Sentence refers to the time of the Certificate
C.This Sentence refers to the date of the Certificate
D.This Sentence refers to the issue of the Certificate
第2题：
Get ready for （）the cargo on deck.
第3题：
The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?
A.The profile of the valve is like a globe
B.The valve seat is set into the bulbous body
C.The plug or disc of the valve is made vertical to the axis of the pipe
D.The valve seat is located at right side of the plug or disc
第4题：
预检（Pre-clearance）
第5题：
LASH（）
第6题：
In Cargo Survey，T．C．V．refers to ______．
A.total calculated volume
B.terminal cargo volume
C.tank cargo valve
D.tolerance of cargo valve
第7题：
翻译：Clearance Sales are fina
第8题：
A what precisely the link between the symbol and the concept is
B what symbol/form. refers to
C what referent refers to
D what thought/reference refers to
第9题：
clearance，C
第10题：
having a shorter duration of opening
having a longer duration of opening
closing sooner
opening later