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smooth endoplasmic reticulum(SER)光面内质网
smooth endoplasmic reticulum(SER)光面内质网
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smooth endoplasmic reticulum(SER)光面内质网
A ball with a smooth surface made to roll on a very smooth surface would ______
A.remove its surface
B.meet some objects
C.roll a long distance
D.change its direction
A ball with a smooth surface made to roll on a very smooth surface would ______.
A.remove its surface
B.meet some objects
C.roll a long distance
D.change its direction
People used to think that the surface of the moon was smooth, ______?
A.don't they
B.wasn't it
C.didn't they
D.usedn't they
A.smooth
B.leveled
C.sanitary
D.paralleled
IATA services four group interested in the smooth operation of the world air transport system.( )