托烷类生物碱的特征反应
A.Kedde反应B.Vitali反应C.Keller-Kiliani反应D.Marquis反应E.坂口反应
参考答案:D
—Could you tell me ________ at the meeting?
—Sorry. I don’t know. I was not at the meeting.
A. what did he say B. what he says C. what he said
保卫国家自身的安全是我国国防的目的之一。