单项选择题
A.The cylindrical barrel is coupled to the motor
B.The cylindrical barrel has an odd number of bores
C.The bores end in sockets
D.The sockets fit in the swash plate
单项选择题 With reference to a two ram actuating mechanism, which one of the following statement is false?（）
单项选择题 As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engineSo a water separator should be mounted beneath the bottom part of the engine inlet manifoldA water separator is used in order to （）.
单项选择题 Which of the following operations need to be entered on the Oil Record Book Part I? （） (1) Ballast of fuel oil tanks (2) Condition of oil discharge monitoring and control system