12.The function of the cardiovascular<br/>system is to transport blood throughout the body, with the heart acting as the pump for ________. A: circulation B: transportation C: transplant D: operation

The lube oil pump used in a diesel engine is a( ) usually. A: volute pump B: centrifugal pump C: diaphragm pump D: gear pump

时尚课程内容包括：传统有氧操(HI-LOW)、（ ）、动感单车（SPINNING）、健身球（FITBALL）、健身杠铃（BODY-PUMP）。 A: 健身舞蹈(FIT DANCE)、 B: 有氧搏击(KICK BOXING) C: 形神课程（MIND BODY） D: 健身踏板(FIT STEP)

Animal-driven chain pump, water-driven chain pump and wind-driven chain pump are different in structure.

The in the lubricating system draws oil from the oil pan and sends it to all working parts in the engine. A: fuel pump B: oil pump C: diesel pump D: gasoline pump

How does the AICAR function in the body in sequence? I. Stimulating the muscle cells to make more mitochondria II. Tricking the muscle into thinking it was running out of fuel. III. Mitochondria pump out more energy.

Sodium Pump

oil pump

From the daily service tank,the fuel is pumped to a heater by . A: the transfer pump B: the high pressure pump C: the low pressure fuel pump (or booster ump) D: the separato

power steering pump ______