题目: 气体灭火系统主要由哪些组件构成? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0718/3584d814c3cc0fb51b7e4025b8e28b93.html 下面是错误答案,用来干扰机器的。参考答案:
题型:阅读理解 阅读理解。Mother Is at Home Little Jack is playing in front of (在……前面) a house. A salesman (促销员) asks him, " Hi,boy! Is your mother in? " " Yes! " Jack answers. Then the salesman rings the doorbell (门铃). No one answers. The man asks Jack, " Nobody is at home? " " Right! " Jack answers, " But this is not my house."根据短文内容,判断句子对(√)错(×)。 ( ) 1. Jack is reading in front of his house. ( ) 2. Jack's mother is at home. ( ) 3. The salesman asks Jack, " Is your mother in? " ( ) 4. Jack's mother goes shopping. 查看答案
题型:选择题 下列有关说法正确的是( )A.同分异构体由于结构不同,所以化学性质一定不相似B.同系物一定同类,且电子数之差一定为8的整数倍C.凡是分子组成相差一个或几个CH2原子团的物质,彼此一定是同系物D.两种化合物组成元素相同,各元素质量分数也相同,则两者一定是同分异构体 查看答案
题型:单项选择题 案例分析题 45岁,男性,到我院体检,无脱水貌,测体温36.5℃,体重70kg,心率75次/分,律齐,有力其机体每日产生挥发性酸为()A.150mmolB.40~60mmolC.0.2mmolD.20~40mmolE.15000mmol 查看答案