The shaft and spare parts() should be well
问题:
The shaft and spare parts() should be well greased in order to avoid corrosion.
A.in the store room
B.in the cylinder
C.in the scavenge air box
D.in the water box
The shaft and spare parts() should be well greased in order to avoid corrosion.
A.in the store room
B.in the cylinder
C.in the scavenge air box
D.in the water box