During the tetanus, the action potential on the muscle membrane
A、could not be summated.
B、appear after the former action potential initiates contraction.
C、the amplitude will incease.
D、the amplitude will decrease.
E、the frequency will decrease.
A、could not be summated.
B、appear after the former action potential initiates contraction.
C、the amplitude will incease.
D、the amplitude will decrease.
E、the frequency will decrease.
A、appear after the former action potential initiates contraction.
B、could not be summated.
C、the amplitude will incease.
D、the amplitude will decrease.
E、the frequency will decrease.
A.tetanus
B.rabies
C.influenza
D.hepatitis
I didn't see much during the flight because there was ______ cloud.
A.too many
B.too much
C.much too
The streets are all day. It______ during the night.
A.can't have rained
B.mustn't have rained
C.couldn't rain
D.shouldn't have rained
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