皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【简答题】
A. acceptable; B. double ;C. pattern ;D. popular; E. system; F. possibility ;G. intention; Before marriage, younger Americans date each other, that is, they often go out together. Casual dating usually begins in the early teens, and in the late teens a __1_____ of steady dating develops. There is a great ___2______ that one goes to a dance with one person, to a football game with another, and to a picnic with a third. Sometimes two couples go out together. This is known as “ __3____ dating”. Group dating is also ___4_____ among young people. Large groups of boys and girls may go around together. Young people may go out together for a long time, which is, in effect, a public statement of their __5___ to marry. Men and women go out together a great deal especially those in cities. This is “adult dating”. They ski together, dine together, either at restaurants or in each other’s homes. The American dating __6_____ is a rather casual one. Often young Americans who hardly know each other go out on dates. It is also ____7______ for them to arrange a “blind date”, that is, a date between two young people who have not met before.
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】Tom has put on so much weight recently that his mother has to ______ all his trousers to his measures.
A.
let out
B.
give away
C.
bring in
D.
make up
【简答题】若配制pH=10.0的 NH 3 -NH 4 Cl组成的 缓冲溶液1.0L用去15 mol.L -1 氨水350mL,问需要多少 NH 4 Cl 克? (已知M(NH 4 Cl)=53.49) 提示:本题与上题相似,看看究竟用什么比方便计算
【简答题】在 pH=10.0 的 NH 3 –NH 4 Cl 介质中 , 以 EDTA 溶液滴定等浓度的 Zn 2+ , 若溶液中游离 NH 3 的浓度增大 , 化学计量点时的 pZn' ( ); pZn ( ) 。
【单选题】当pH=10.0,[NH4+]+[NH3]=0.20mol/L时,计算Zn2+/Zn电对条件电位为( )
A.
-0.89
B.
-0.94V
C.
-0.99V
D.
-1.04V
【简答题】Samsung, who has a history of producing anti-Apple advertisements, the Apple smart watch in one of its recent ads.
【单选题】______是取法朝野关系来建构星空、天区。
A.
四象
B.
三清
C.
三垣
D.
三尊
【判断题】形成的空间光调制光束中的水平偏振光和垂直偏振光分量强度存在180度的相位差。
A.
正确
B.
错误
【单选题】计算lgK’MY: (1) pH = 5.0,lgK’ZnY; (2) pH = 10.0,lgK’AlY; (3) pH = 9.0 [NH3] + [NH4+] = 0.20 mol/L [CN-] = 10-5 mol/L lgK’NiY
A.
9.9,2.4,7.82
B.
6.9,3.4,7.80
C.
9.9,2.4,7.82
D.
6.9,2.4,5.82
【简答题】02 mol·L -1 EDTA等浓度滴定Zn 2+ ,在pH=10.0的NH 4 Cl-NH 3 介质中若 =0.2 mol·L -1 ,判断能否准确滴定。达化学计量点时,未络合的Zn 2+ 百分数是多少?(pH=10.0时,α Zn(OH) =10 2.4 ,lgα Y(H) =0.5,lgK ZnY =16.50,锌氨络合物的lgβ 1 ~lgβ 4 分别为2.27、4.61、7.01、9....
【单选题】下列哪种情况下的中暑病人预后最差
A.
血压轻度下降
B.
高热40℃
C.
昏厥
D.
昏迷超过3h
E.
高热抽搐
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