神经激素是指

神经激素是指A.存在于神经系统的激素 B.作用于神经细胞的激素 C.由神经细胞分泌的激素 D.使神经系统兴奋的激素 E.调节内分泌腺功能的激素

查看答案

对以下抗生素描述正确的是

对以下抗生素描述正确的是A.盐酸小檗碱味极苦 B.呋喃妥因含有硝基呋喃及咪唑二酮结构 C.磷霉素是结构最小的抗生素 D.克林霉素分子含有糖环和氯 E.克林霉素是

查看答案

[A] An essay.[B] A magazine article,[C] A poem. [D] A short

[A] An essay.[B] A magazine article,[C] A poem. [D] A short story.

查看答案

[A] Her professor. [B] A classmate. [C] Her former boss.[D]

[A] Her professor. [B] A classmate. [C] Her former boss.[D] A foreign diplomat.

查看答案