22.睡眠時,會在下列那一個時期出現sleep spindle和K complexes?
(A)N1
(B)N2
(C)N3
(D)REM sleep
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統計: A(71), B(555), C(136), D(330), E(0) #3204279
統計: A(71), B(555), C(136), D(330), E(0) #3204279
