你可能感興趣的試題

Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.

A.reduce electrolytic action on heat exchanger metals
B.keep heat transfer surfaces shiny and clean
C.prevent rapid accumulation of marine growth
D.provide a protective coating on heat exchanger surfaces

單項(xiàng)選擇題

With a （） load the voltage and current are in phase.

A.pure resistance
B.capacitive
C.inductive
D.None of the above

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