A.the “ nip ”is zero
B.the “ nap ” is zero
C.the “ gap ”is correct
D.the “ clearance ” is correct
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A.a closed loop control system
B.an open loop control system
C.a boiler control system
D.a steering gear
A.sliding bowl bottom
B.gravity disc
C.bowl
D.liquid level detector
A.sliding bowl bottom
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C.separating disc
D.scum valve
A.turbine
B.screw
C.vaneejector
D.centrifugal
A.leaky pipe
B.opened inlet valve
C.too much water in tank
D.None of the above
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