A、shield fire fighters from radiant heat
B、break up burning material
C、get the most water possible on the fire
D、drive heat and smoke ahead of the fire fighters
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A、 closing the stream B、 flushing the stream C、 writing to the stream D、 marking a location in the stream E、 writing a line separator to the stream
A、reciprocating at the piston pin, rotary at the crank pin B、reciprocating at the crank pin, rotary at the piston pin C、straight reciprocation D、straight rotation
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