The oil is drawn from a drain tank through
题型:单项选择题
问题:
The oil is drawn from a drain tank through (), one of a pair of pumps, into one of fine filters.
A.a strain tank
B.a head tank
C.a service tank
D.a strainer
The oil is drawn from a drain tank through (), one of a pair of pumps, into one of fine filters.
A.a strain tank
B.a head tank
C.a service tank
D.a strainer