单选题The outside diameter of the pipe is （） the diameter of the bore of the piston rod, the result being that an annular space formed between the piston rod and the pipe.Aless thanBgreater thanCequal toDtwice larger than
单选题
The outside diameter of the pipe is （） the diameter of the bore of the piston rod, the result being that an annular space formed between the piston rod and the pipe.
A
less than
B
greater than
C
equal to
D
twice larger than
参考解析
解析：
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