î î î. block grants. categorical grant. commerce clause. cooperative federalism. devolution. elastic clause. federalism. line-item vote. mcculloch vs. maryland. necessary and proper clause. new deal. nullification. reapportionment. sovereign immunity. spending clause. supremacy clause. unfunded mandates.
The compression ratio is the ratio of the volume of the cylinder and the combustion chamber when the piston is at the bottom, and the volume of the combustion chamber when the piston is at the top. Automotive engineers can improve fuel efficiency and fuel economy by designing engines with high compression ratios.
1 When one rescuer is performing CPR the ratio of compressions to ventilations is 30:2. 2  When two rescuers are performing CPR the ratio is 30:2 for adults and 15:2 for children, until an advanced airway is in place. 3  This results in more compressions per minute and limits hyperventilation.lsewhere in the body during cardiac arrest, blood flow ceases and a large volume of blood accumulates in the veins of the abdomen and thorax. This venous blood has gone through the capillary network and has released only 20%-30% of its oxygen content.