A.complex
B.confused
C.vigorous
D.instantaneous
A.complex
B.confused
C.vigorous
D.instantaneous
A.What
B.That
C.Which
D./
In the planar mechanism, the small gearrotates without slipping on the big fixed gear. Crankrotates around point. Baris pin-connected to gearand bar. Which statements are correct?
A、The contact pointof the two gears is the instantaneous center for velocities of gear.
B、Pointis the instantaneous center for velocities of gear.
C、Pointis the instantaneous center for velocities of bar.
D、Pointis the instantaneous center for velocities of bar.
Whereas sudden great disasters are instantaneous, others, such as droughts, are ______.
A.cumulative
B.formidable
C.eternal
D.prospective
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