现有CO、CO2混合气体,小红同学按如下顺序进行操作(如下图所示装置中,a是弹簧

题型:选择题

问题:

现有CO、CO2混合气体,小红同学按如下顺序进行操作(如下图所示装置中,a是弹簧夹,b是分液漏斗活塞):①关b开a;②通入混合气体;③收集气体;④关a开b;⑤收集气体。通过上述操作小红

[ ]

A.只收集到CO 

B.只收集到CO2

C.先收集到的是CO

D.先收集到的是CO2

考点:实验室制取和收集气体的思路
题型:选择题

读下面短文,画出家谱图 

    This is my friend John Wilson and his family. This is his grandfather. His name is Fritz. This is his grandmother. Her name is Evelyn. This is his mother. Her name is Anna. This is his father. His name is Earl. Earl’s parents are Fristz and Evelyn. These are his sisters, Christie and Carina.

 1. ______2. ______3. ______4. ______

题型:选择题

DIC出血的特点()

A.多发生于深部组织

B.多对称分布

C.多为自发性

D.多为继发性

E.多为多发性

题型:选择题

子宫内膜异位症的腹膜早期病变包括()、()、()、(),发展为典型的色素灶需()个月。

题型:选择题

在寄存器间接寻址方式中,操作数在( )中。

A.通用寄存器

B.堆栈

C.主存单元

D.段寄存器

题型:选择题

公平理论中,员工比较的是( )。

A.投入、产出的客观测量结果

B.投入、产出的客观比率

C.投入、产出的知觉

D.投入、产出的计划标准

更多题库