It is requested that the machine be operated according to the .
A. introductions
B. explanations
C. suggestions
D. instructions
网友回答
A. introductions
B. explanations
C. suggestions
(答案→)D. instructions
解析:D 考查名词辨析。introductions介绍;explanations解释;suggestions建议;instructions 说明书,使用说明。根据句意选D。