题目
Shaker, circulation and spray are the three general methods used in __________A. pre-injection fuel oil treatmentB. lube oil filtrationC. lube oil purificationD. piston cooling
Shaker, circulation and spray are the three general methods used in __________
A. pre-injection fuel oil treatment
B. lube oil filtration
C. lube oil purification
D. piston cooling
题目解答
答案
D. piston cooling