The physician orders IV fluid volume replacement with lactated Ringer's solution at a rate of 75 mL/hour. Using an infusion set that provides 15 gtt/mL, the nurse should calculate the flow rate to be （）.

A．10 gtt/min.

B．12 gtt/min.

C．19 gtt/min.

D．75 gtt/min.

关于公平竞争的说法不正确的是？（）

A.是指人们之间进行的公开、平等、公正的竞争

B.竞争中有合作，合作中有竞争

C.在合作中获得竞争优势

D.用各种手段保证在竞争中获得优势