[单选] With reference to a radial piston pump, which one of the following statements is false?（）
A . Surrounding the fixed shaft is a hollow shaft B . This hollow shaft carries radial bores C . Each bore is fitted with a well-lapped plunger D . There are always even numbers of bore
战勤保障大队救生缓降器储备数量为10只。
简述星加绦虫属。
In the event of a casualty to a ship，who is responsible to make records available to the Coast Guard official authorized to investigate the casualty?（） Officer in Charge，Marine Inspection。 The person who caused the casualty。 The company man。 The owner。
太阳能光伏产业链包括哪些？
战勤保障大队导向绳储备数量为50根。
With reference to a radial piston pump, which one of the following statements is false?（）
