某同学在配制500mL0.5mol/LNaOH溶液的实验过程中,除用到玻璃棒、烧

题型:选择题

问题:

某同学在配制500mL 0.5mol/L NaOH溶液的实验过程中,除用到玻璃棒、烧杯、500mL容量瓶、量筒、胶头滴管、试剂瓶之外,还需要的主要仪器有(  )

A.天平

B.温度计

C.蒸发皿

D.酒精灯

考点:配制一定物质的量浓度的溶液
题型:选择题

男性,27岁,颈部烧伤后出现颈胸部瘢痕挛缩畸形,拟采用面颈部扩张皮瓣修复。

二期手术拆线后使用弹性敷料压迫及颈托支撑多长时间()

A.1个月

B.2个月

C.3个月

D.4个月

E.2周

题型:选择题
一堆苹果上午将全部的
3
8
装了20筐还余150千克,下午把剩下的装完,全部苹果正好装了重量相等的70筐,这批苹果一共有多少千克?
题型:选择题

Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams can tell us about ourselves. It’s like our (11) is talking to us.

Why are dreams (12) strange and hard to understand Some people think our brain uses (13) to talk to us. When we fly, swim, or fall down in our dreams, it has a (14) meaning. Lots of doctors help people (15) their dreams. They find that dreams tell us about our (16) and fears.

These days, many scientists (17) that dreams are very important. During the day, we have many (18) , and our brain receives a lot of information. When we dream, our brain (19) information that is not important, and puts the most important information into our (20) . As we learn more about the brain, we may find answers to our questions about dreams.

13().

A.symbols 

B.examples 

C.numbers 

D.pictures

题型:选择题

心肺复苏时,按摩和人工呼吸同时进行时,其比例为(),交替进行。双人操作按5:1进行。吹气时应停止胸外按压。一旦心跳开始,在立即停止心脏按摩的同时,尽快把患者送到医院继续诊治。

A、15:10

B、10:2

C、15:2

D、10:5

题型:选择题

确定质量管理体系是否符合GB/T19001-2016的要求,必须进行第三方认证。

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