皮皮学，免费搜题
登录
搜题
【单选题】
下列关于塔板理论假设中有误的是( )A.
在色谱柱内一小段高度H称为理论塔板高度
B.
流动相连续通过色谱柱
C.
样品都加在0号塔板上
D.
分配系数在各塔板上是常数
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】He was a much older tennis player but he had the great advantage of experience.
A.
strong point
B.
weak point
C.
disadvantage
D.
shortcoming
【简答题】心肌病可分为扩张型、_________型、限制型和未定型4种类型。
【简答题】所有的视图是否都可以更新?为什么?
【简答题】下图表示人体细胞通过内环境与外界环境进行物质交换的过程。 A 、 B 、 C 、 D 表示 4 种器官,请根据图回答: (1) 血液在 A( 即 ________) 内进行气体交换,以得到 O 2 ,排出 CO 2 ,该过程是通过 ________ 作用进行的。 (2)B( 即 ____________) 内的营养物质,通过 __________ 、 __________ 等过程进入循环系统。 (...
【简答题】如图(a)所示电路，已知U s =2V，R 1 =R 2 =2Ω，非线性电阻的伏安特性为i=f(u)=2u 2 (u＞0)。
【单选题】He had studied Spanish, and had grown up in New York City--the most culturally _________ place in America.
A.
conspicuous
B.
diverse
C.
obscure
D.
dizzy
【单选题】PASSAGE TWO (1)Paul was dissatisfied with himself and with everything. The deepest of his love belonged to his mother. When he felt he had hurt her, or wounded his love for her, he could not bear it. ...
A.
indifferent
B.
desperate
C.
pessimistic
D.
ambiguous
【单选题】Passage two ( 1 ) PAUL was dissatisfied with himself and with everything. The deepest of his love belonged to his mother. When he felt he had hurt her, or wounded his love for her, he could not bear i...
A.
. indifferent
B.
. desperate
C.
pessimistic
D.
ambiguous
相关题目：
参考解析：
知识点：
题目纠错 0
发布
