8. ______ is a piece of metal, rubber or plastic which fits tightly into a hole and is often found
onboard lifeboats to prevent the sea water from permeating through the hole and empty the water
cumulated on the bottom of the boat.
(A) Slip gear
(B) Derrick
(C) Boat hook
(D) Drain plug
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統計: A(62), B(87), C(88), D(458), E(0) #2439534
統計: A(62), B(87), C(88), D(458), E(0) #2439534