单项选择题
A.make sure B.be sure C.assure D.believe
Pumps and fine filters are arranged （） with one as stan...
单项选择题Pumps and fine filters are arranged （） with one as standby.
A.in duplicate B.in double C.at twice D.for two
Please draw out a 0l mm shim between the two halves of ...
单项选择题Please draw out a 0l mm shim between the two halves of the bearing （） the clearance.
A.to reduce B.to increase C.and reduce D.and increase
Please draw out a 01 mm （） between the two halves of th...
单项选择题Please draw out a 01 mm （） between the two halves of the bearing to reduce the clearance.
A.shim B.gasket C.washer D.packing
