单项选择题
A.(4)-(2)-(3)-(1)
B.(4)-(3)-(1)-(2)
C.(4)-(3)-(2)-(1)
D.(4)-(1)-(2)-(3)
单项选择题 The work fuel does in each working cycle can be obtained by taking the （）.
单项选择题 The words such as quantity, grade, viscosity and specific gravity should be in the （）.
单项选择题 The withdrawing of the cylinder liners, in general, depends on their （）.This may amount to approximately 1/120 of the diameter in some engines.