While most sporting equipment and musical instruments can be checked in or carried on board, some( )apply to extremely large items or a large number of items.
A.
relax
B.
realization
C.
restrictions
D.
release
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举一反三
【单选题】A 42-year-old man with myasthenia gravis notes increased muscle strength when he is treated with an acetylcholinesterase (ACHE) inhibitor. The basis for his improvement is increased
A.
amount of acetylcholine (Ach) released from motor nerves
B.
levels of Ach at the muscle end plates
C.
number of Ach receptors on the muscle end plates
D.
amount of norepinephrine released from motor nerves