A. 油缸
B. 溢流阀
C. 换向阀
D. 液压泵
B.速度与慢速换接回路
C.行程控制顺序运动回路
D.采用蓄能器的快速运动回路
A、Slang
B、Planned and rehearsed gestures
C、Spontaneous topics
D、Restless movement
A、language and phrasing
B、gestures
C、topics
D、manners
A、more fluid and interactive
B、less fluid and interactive
C、more fluid and less interactive
D、less fluid and more interactive
A、standing in front of the audience
B、the lack of eye contact between presenter and audience
C、the lack of physical closeness between presenter and audience
D、standing closely to the audience
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