既可用排水法又可用向下排气法收集的一组气体是( ) A.H2、O2 B.H2、C

题型:选择题

问题:

既可用排水法又可用向下排气法收集的一组气体是(  )

A.H2、O2

B.H2、CO2

C.CH4、H2

D.CH4、O2

考点:实验室制取和收集气体的思路
题型:选择题

根据短文判断正误,正确写“T”,错误写“F”。

     Martin told me something interesting about him. He was on vacation in the United States last summer.

He stayed in a hotel and there was a big fire (火) in the room next to his room. He thought he heard a baby

crying, so he ran into the room with fire. When he got in, he saw that the TV was on and found that the

baby was on TV. So Martin took the television and ran out of the room. Then the firemen came and put out

(扑灭) the fire.

( )1. Martin went to America on vacation.           

( )2. There was a big fire in Martin's room.       

( )3. Martin wanted to save the baby.               

( )4. The baby was on the Television.               

( )5. In fact, Martin saved the television at last. 

题型:选择题

男,40岁,胫骨骨折石膏管型固定后8h,诉患肢疼痛难忍,检查:肢端苍白,温度降低,足趾不能主动活动,应考虑

A.骨折端移位

B.衬垫不妥

C.继发感染

D.血管受压

E.体位不当

题型:选择题

外用可治咽喉肿痛、口舌生疮及目赤肿痛的是()

A.大黄

B.芒硝

C.芦荟

D.玄明粉

E.巴豆

题型:选择题

根据心血管系统、呼吸系统:

题型:选择题

在采集麻蝇标本时,使用笼诱法诱捕以()诱饵

A、腐鱼

B、臭豆腐

C、酒糟

D、糖醋饵

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