你可能感興趣的試題

An axial軸向 piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned （）.

A.radially from the shaft
B.parallel to each other and to the shaft
C.parallel to each other but at a right angle to the shaft
D.at an angle to each other and to the shaft

單項(xiàng)選擇題

The usual number of single-acting pistons used in a variable stroke axial-piston pump is （）.

A.3 or 5
B.5 or 7
C.7 or 9
D.9 or 11