【C17】A．surveyB．surpassC．surmountD．surface

A well－lubricated bearing surface always appears__________.

When a hydraulic vane pump is working, which of the following is in contact with the vanes？ （1) the rotor; （2) the internal surface of the housing; （3) the external surface of the housing.

The wet glass left a mark on the surface of the table.（英译中)

What does the man have to do before he meets Susan？A．Conduct a marketing surveyB．Make an i

Which of the listed cylinder liner surface conditions indicates proper lubrication？A.Dull

【C3】A．appearanceB．characterC．distinctionD．surface