Auxiliary boilers can be classified as() A
题型:单项选择题
问题:
Auxiliary boilers can be classified as()
A.water-tube natural circulation boilers
B.fire-tube boilers
C.water-tube forced circulation boilers
D.all of the above
Auxiliary boilers can be classified as()
A.water-tube natural circulation boilers
B.fire-tube boilers
C.water-tube forced circulation boilers
D.all of the above