Centrifugal casting is suitable to produce ( ).

Thepistonsupportingbodyismainlysubjectedto（）stress. A: pushing B: centrifugal C: stretch D: compressive

In operation, the connecting rod is subjected to both ( ) and ( ) .（ ） A: inertia loads B: centrifugal force C: gravity D: gas pressure

Automobile engine water pump are of many designs, but most are the ______ type. A: line B: centrifugal C: V D: W

The lube oil pump used in a diesel engine is a( ) usually. A: volute pump B: centrifugal pump C: diaphragm pump D: gear pump

If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the A.oil has a tendency to emulsify in the bowl B.purifier will act as a clarifier at the discharge ring C.oil will be lost through the water discharge ports D.oil solids will be deposited only at the intermediate top disk