A、fouled tubes in shell and tube condenser
B、too little or too warm condenser water
C、air or non-condensable gas in system
D、overcharge of refrigerant
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A、cold front becoming stationary B、warm front becoming stationary C、cold front overtaking a warm front D、warm front dissipating
A、warm-up allows the hydraulic system to become charged with oil B、warm-up allows the relief valves to be properly tested C、hydraulic strainers operate only during the warm-up period D、hydraulic fluid must be at the proper viscosity
A、immerse the feet in warm water B、warm the feet with a heat lamp C、warm the feet at room temperature D、rub the feet
A、extremely cold air from shore passes over warmer water B、warm dry air from shore passes over cooler water C、cold ocean water evaporates into warm air D、cool rain passes through a warm air mass
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A、A.Archbishop of York B、B.Mayor of London C、C.Archbishop of Canterbury D、D.the Treasurer
A、rising air currents produced by the warm islands B、warm air from the sea rising over higher land areas C、cool land air mixing with warm sea air D、descending air over the islands
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