The client is to receive an IV infusion of 3000 mL of dextrose and normal saline solution over 24 hours. The nurse observes that the rate is 150mL/hour. If the solution runs continuously at this rate, the infusion will be completed in （）.

A．12 hours.

B．20 hours.

C．24 hours.

D．50 hours.

按我国设计规范要求，车辆缓冲器的能量吸收率应不小于50%。