In order to improve the working conditions of the crosshead bearings, the bearing pressure is made and the peripheral speed is made in later designs（）<br>A:smaller, higher<br>B:higher, smaller<br>C:smaller, smaller<br>D:higher, higher

In order to improve the working conditions of the crosshead bearings, the bearing pressure is made and the peripheral speed is made in later designs（）
A:smaller, higher
B:higher, smaller
C:smaller, smaller
D:higher, higher

出自：海船船员证

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