皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【简答题】
Students’ pressure sometimes comes from their parents. Most parents are 1._____________, but some of them aren’t very helpful with the problems their sons and daughters have in 2.________ college, and a few of them seem to go out of their way to add to their children’s difficulties. For one thing, parents are often not 3.____________ the kinds of problems their children face. They don’t realize that the 4.____________ is keener, that the required standards of work are higher, and that their children may not be prepared for the change. 5._____________to seeing A’s and B’s on high school report cards, they may be upset when their children’s first semester college grades are below that level. At their kindest, they may 6._____________inquire why John or Mary isn’t doing better, whether he or she is trying as hard ad he or she should, and so on. At their worst, they may 7._____________ to take their children out of college, or 8.______ funds. Sometimes parents regard their children as extensions of themselves and think it only right and natural that they determine what their children do with their lives. In their involvement and 9.________________ with their children, they forget that everyone is different and that each person must develop in his or her own way. They forget that their children, who are now young 10.____________, must be ones responsible for what they do and what they are.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】实验室用锌与2mol/L盐酸溶液制取氢气,下列措施能使反应速率降低的是
A.
用锌粉代替锌块
B.
改用1.5mol/L硫酸溶液
C.
改用1mol/L硝酸溶液
D.
向该硫酸溶液中加入等体积的水
【多选题】纽曼系统模式中日常健康状态的强弱由以下哪些方面组成
A.
生理
B.
心理
C.
社会文化
D.
发展
E.
精神
【单选题】当钢板厚度较大时,为防止钢材在焊接或在厚度方向承受拉力而发生分层撕裂,钢材应满足的性能指标是 ( )
A.
Z 向收缩率
B.
冷弯性能
C.
冲击韧性
D.
伸长率
【简答题】实验室用锌粒和稀硫酸反应制取的氢气,经过净化干燥后,还原氧化铜. (1)根据所得到铜粉的质量,可求得参加反应的氢气的质量,进而计算出应消耗的锌粒和稀硫酸的质量.但实际耗用的锌粒(不含杂质)和稀硫酸的质量都远远超过理论值.从实验过程看,可能的原因有哪些?(至少答出三点原因) ①______ ②______③______ (2)Cu + 在酸性溶液中不稳定,可发生反应生成Cu 2+ 和Cu.Cu与强氧...
【多选题】下列方法中,能用于实验室里制取气体的是(  )
A.
加热试管中的氯化铵固体制取氨气
B.
用锌与稀硝酸反应制取氢气
C.
用石灰石与稀盐酸反应制取二氧化碳
D.
往过氧化氢中加入少量二氧化锰快速制取少量氧气
【单选题】当钢板厚度较大时,为防止钢材在焊接或在厚度方向承受拉力而发生分层撕裂,钢材应满足的性能指标是(    )。
A.
z向收缩率    
B.
冷弯性能    
C.
冲击韧性    
D.
伸长率
【判断题】硝酸与锌反应,能制取氢气。
A.
正确
B.
错误
【单选题】对于临时租入的固定资产
A.
借贷记账法在制造企业的应用
B.
对于临时租入的固定资产
C.
简单
D.
单选题
【单选题】至2008年为止,我国城镇化水平是?
A.
0.457
B.
0.46
C.
0.46
D.
0.47
【单选题】足量的锌与酸反应,欲使制取氢气的反应速率尽可能大,选用的反应条件正确的组合是 ①锌粒 ②锌粉 ③加少量的硫酸银的饱和溶液 ④1mol/L的盐酸 ⑤5mol/L的硝酸 ⑥1mol/L的硫酸 ⑦加热 ⑧加大量的硫酸铜晶体 ⑨不断振荡 ⑩加大体系的压强
A.
②③⑥⑦⑨
B.
①③⑤⑦⑩
C.
②④⑥⑦⑧⑨
D.
②⑦⑧⑨⑩
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题