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admit only enough fresh outside air to provide proper ventilation reduce the air reheating system load lower the compressor head pressure operate the purge recovery unit continuously
transferable untransferable valid invalid
only to catch unluckily caught always being caught only to be caught
Not only a fun thing is it to do Not only a fun thing to do it is Not only it is a fun thing to do Not only is it a fun thing to do
Ⅰ only Ⅱ only Both ⅠandⅡ Neither Ⅰnor Ⅱ
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central air condition system high velocity system low velocity system single duct system
Ⅰ only Ⅱ only Both Ⅰand Ⅱ Neither Ⅰnor Ⅱ
only to catch unluckily caught always being caught only to be caught
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equip equipped are equipped was equipped
Reduce engine speed to idle before removing the filter Soak the dirty filter in kerosene only Blow out the air inlet with compressed air Cover the air inlet after removing the filter
Not only a fun thing is it to do Not only a fun thing to do it is Not only it is a fun thing to do Not only is it a fun thing to do
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