21. Negative-feedback mechanisms are:
(A)Most often involved in maintaining bomeostasis
(B)Activated only when a variable rises above a set point
(C)Analogous to a furnace that produces heat
(D)Involved in contractions during childbirth
(E) Found only in birds and mammals
詳解 (共 1 筆)
未解鎖
1. 題目解析 這題考察的是負回饋機制的...