問題詳情
12. Which of the following is correct about Nerve nets?
(A) Exclusive to Sponge.
(B) The simplest form of the nerve system.
(C) Signal propagates in one direction.
(D) With myelination.
(E) None of the above.
參考答案
答案：B
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中