娃娃鱼是国家二级重点保护的野生动物，它的学名是（）A.蝾螈 B.小鲵 C.大鲵 D.

对M1乙酰胆碱受体具有较高选择性的药物为

A．溴丙胺太林(Propantheline Bromide)
B．贝那替秦(Benactyzine)
C．盐酸苯海索(Trihexyphenidyl Hy-drochloride)
D．哌仑西平(Pirenzepine)
E．樟柳碱(Anisodine)

建立一个表文件，表中包含字段：姓名(C,6)、出生日期(D)和婚否(L)，则该表中每条记录所占的字节宽度为（ ）。

A． ab

B． bd

C． ac

D． 出错

在架线电机车巷道中施工时要停电。

免疫荧光技术检测ANA，抗体核型不包括（）

A.周边型

B.均质型

C.核仁型

D.颗粒型

E.核孔型

Many word processing programs include spell checker. It checks the spelling of every word in a (120) by looking up each word in its dictionary. If the word does not appear in the dictionary the user is (121) to possible misspelling and possible corrections are often (122) . Spell checker does not recognize unusual people names or specialized terms, but it will often allow you to create your own personal dictionary of specialized words you often use. Spell checker is a valuable aid to proofreading, but it can not catch the (123) of one correctly spelled word for another (such as form for from). Thus it does not (124) a document is free of spelling errors.

A．committee

B．correct

C．guarantee

D．prove