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    down air pollution,we should take the bus or subway instead of drivings.A. Cut B. To cut C. Cut...

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died    dying down    dying out    death  
BaFBr:Eu  NaSO·SHO  NaCO  CHCOOH  a-Se  
BaFBr:Eu  NaSO·SHO  NaCO  CHCOOH  a-Se  
safety valve  indicator cock  blow-down valve  start valve  
overhaul  running  blowing down  All of the above are correct  
thrown  follow  brown  shown  
BaFBr:Eu  NaSO·SHO  NaCO  CHCOOH  a-Se  
yearly  quarterly  monthly  daily  
up/opened  down/open  up/closed  down/closed  
up and draw in a fresh air charge  down to burn off fuel  down to compress the fuel air charge  up and force out the exhaust gases  
the inlet port is opened by the up coming piston; the port is closed by the down going  the inlet valve is opened by the down going piston; the inlet valve is closed  the inlet port is opened by the down going piston; the port is closed by the up coming  the inlet valve is opened  
unfunctional  break down  off power  off air"  
BaFBr:Eu  NaSO·SHO  NaCO  CHCOOH  a-Se  
BaFBr:Eu  NaSO·SHO  NaCO  CHCOOH  a-Se  
held up    turned down    broke up    pulled down  
Finished with Engine  Stop the Engine  Stand-by Engine  Slow-down Engine  
cut down    cut up    cut out    cut off  
held up    turned down    broke up    pulled down