With reference to a radial piston pump, which one of the following statements is false?（）<br>A:Surrounding the fixed shaft is a hollow shaft<br>B:This hollow shaft carries radial bores<br>C:Each bore is fitted with a well-lapped plunger<br>D:There are always even numbers of bores

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 bores

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