The needle valve in a fuel valve will _____ when the fuel pressure action on the needle va

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• 1、_ should be defrosteA.The expansion valveB.The safety valveC.The fuel valve
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• 3、When the heat load begins to increase the needle valve of an expansion valve will______.A
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• 4、A ruptured diaphragm in a thermostatic expansion valve will cause the valve to _____.
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• 6、Reducing the clearance between a valve stem and rocker arm will result in the valve _____...
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