阿摩線上測驗
8. The ____ tank maintains the static head on the suction side of the water system. It also provides
a convenient point for collecting vents and adding make-up feed water.
(A) gravity
(B) sump
(C) expansion
(D) collecting
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統計： A(76), B(142), C(467), D(88), E(0) #1767618
統計： A(76), B(142), C(467), D(88), E(0) #1767618
