阿摩線上測驗
19. The strainers should be installed with ______________ that provide the pre-warning of the
necessity for cleaning the strainer.
(A) thermometers
(B) level indicators
(C) pressure drop indicators
(D) flow meters
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統計： A(182), B(185), C(704), D(140), E(0) #2333277
統計： A(182), B(185), C(704), D(140), E(0) #2333277
