肌无力危象时体检可见()胆碱能危象时体检可见()A．瞳孔变大、多汗 B．腹痛、腹泻明

消化系统由____和____两大部分组成。

按照我国目前的划分标准，重大伤亡事故是指()。

A．一次死亡1至2人的事故

B．一次死亡3至9人的事故

C．一次死亡10人以上50人以下的事故

D．一次死亡50人以上的事故

Only when ______ the data again ______ that there was a mistake. [ ]

A. they had studied; did they realize

B. they had studied; realized they

C. had they studied; did they realize

D. had they studied; realized they

抗原提呈细胞包括( )。

A．B细胞

B．巨噬细胞

C．树突状细胞

D．郎格罕氏细胞

E．以上细胞均是

在CSB功率不变的情况下，减小SBO功率，将使航道宽度（）。

A.变窄

B.变宽

C.不变