【判断题】The testes of the bull hang horizontally
【单选题】The cross-head shoes are white metal lined, grooves being cut horizontally on the face of the white metal to ensure _____.
A.
an adequate supply of lube oil
B.
an adequate supply of fuel oil
C.
an adequate supply of turbine oil
D.
an adequate supply of cylinder oil
【简答题】试从可持续发展的角度分析增长与发展的关系
【判断题】刀具补偿又分为刀具直径补偿和刀具长度补偿。
【单选题】To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the _____.
A.
pump must always be primed
B.
volute must impart a radial and rotary motion of the water suction side
C.
connection must guide the liquid to the lantern rings
D.
stuffing box should not be allowed any water leakage
【单选题】The SCARA has () vertical, () horizontally revolute joints .
【单选题】数控车床的刀具补偿分为刀尖圆弧半径补偿和( )。