皮皮学，免费搜题
登录
搜题
【简答题】
J.Martin对信息系统开发的基本出发点之一是希望计算机化的信息系统应注意和强调【 】，特别是可见效益、直接经济效益，否则难以持久。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于氯丙嗪的叙述正确的是
A.
本品结构中有噻唑母核
B.
氯丙嗪结构稳定，不易被氧化
C.
盐酸氯丙嗪在空气或日光中放置，渐变为棕红色
D.
在盐酸氯丙嗪注射液中加入维生素Ｂ
E.
本品与三氯化铁反应显棕黑色
【单选题】听力原文：W: Hello. What's all this then, Harry? M: What's all what? I'm making a cake. W: Yes. We can see what you're up to. Obviously you're making a cake. What else would you be doing with a cake tin an...
A.
Beat up half a dozen eggs.
B.
Add five spoons of sugar.
C.
Add half a pint of cream.
D.
Buy some candles.
【单选题】听力原文：W: What's going on here? M: You mean, what's happening? Well, constable, I'm trying to get out of the window and Fred here is helping me. W: Why are you climbing through the window and not leavin...
A.
The host of the house.
B.
Fred's friend.
C.
A burglar.
D.
The host's brother.
相关题目：