欢迎来到牛牛题库网 牛牛题库官网
logo
搜索

单项选择题

萃取三角形三个顶点分别表示纯溶质、纯原溶剂、纯萃取剂。 （ ）

点击查看答案&解析

相关考题

单项选择题
根据下面资料，回答21-35题
Mrs．McTavish looked out．"It's a lovely day．Would you like to go for a walk in the park"Her children21with excitement．
"Before we go, you need to follow some rules．Everyone must22hands and stay close to me．You can' t23anywhere by yourself．Can you all do that"
All four24they would．As they walked down the street, Fiona said,"I want an ice lolly(冰棍), Mummy．Can we have some"
"You can if you follow the rules," answered Mrs．McTavish．
The park is just around the corner．The children ran off to25After a while, when Mrs．McTavish looked up she couldn' t see Jock．"Fiona, where' s Jock"
"I don' t know, Mummy．He' s not here26," said Fiona．
The others hadn' t27Jock either．Mrs．McTavish had to gather her children together and walk
around the park28for him．She found him sitting near the ice lolly man．"Jock ! What are you doing
here I couldn' t29you．"
"Mummy, I want an ice lolly, "Jock whispered．
"You can't have one now30you didn't follow the rules．"Mrs．McTavish31one for each of the other children and they licked (~,) them all the way home．Jock cried．When they32home she talked to Jock．"Mummy has four children．I must have rules so I can33an eye on you
and know you' re34．"Jock said he was35and he would follow the rules from then on．
第（21）题选
A.quarreled
B.doubted
C.listened
D.cheered
单项选择题
根据《UCP600》,受益人超过提单签发日期后21天才交到银行议付的提单称为( )。 A.
过期提单 B.
倒签提单 C.
预借提单 D.
转船提单
单项选择题
对比色有（ ）。
A.白色和黑色
B.红色和黑色
C.绿色和黑色
D.蓝色和黑色
微信小程序免费搜题

All Rights Reserved 版权所有©牛牛题库网(nntiku.com)

备案号：湘ICP备2022003000号-1

微信扫一扫,加关注免费搜题

微信扫一扫,加关注免费搜题