一个系统具有150个存储单元,在T0时刻系统按下表所示分配给3个进程。 进程最大需求

题型:问答题

问题:

一个系统具有150个存储单元,在T0时刻系统按下表所示分配给3个进程。

进程最大需求已分配
P17025
P26040
P36045
对下列请求应用银行家算法分别分析判定是否安全

该分组的以太网帧的源地址、目的地址和协议类型域各是什么(用16进制表示)

考点:普通考研计算机学科专业基础综合考研计算机学科专业基础综合
题型:问答题

实验室要配制100g15%的氢氧化钠溶液,请回答下列问题:

(1)主要操作步骤:

①______;

②用______称量氢氧化钠______g,倒入烧杯中;

③用______量取水______mL,倒入烧杯中并搅拌;

④把配好的溶液倒入试剂瓶中,盖好瓶塞子并贴上标签(标签中应包括______和______.

(2)溶解过程温度如何变化?______.原因是______.

(3)某同学配制的溶液中溶质的质量分数大于15%,则造成的误差的原因有______

A、称量氢氧化钠时量偏少      B、溶解的烧杯中原来就有水

C、氢氧化钠和砝码位置放反    D、量水时,俯视读出读数.

题型:问答题

不适合射频消融治疗的疼痛是:

题型:问答题

Accidents happen almost every day. Some accidents are not serious and some are. We read about such accidents nearly every day in the newspapers. It is wrong for people to think that accidents take place only on the roads or highways, or even at work places. Home accidents are just as common. Because very few home accidents are reported, people come to think that there are few accidents which happen in homes.

There have been many cases where people fall to their deaths from high rise flats. Children often fall over while coming down the stairs. Old people may slip (滑跤) on wet floors if they are not careful.

Nowadays there are a lot of modern electrical appliances (电器) such as rice cookers which make life easy for the modern house wives. These appliances can kill if they are not used in the proper way. Gas stoves (煤气灶) used for cooking are also dangerous if they are not properly used. They may cause burns or, in more serious cases, even fires.

But all such accidents can be stopped if we are careful and follow simple rules of safety. For example, it is unwise for people to try repairing their own electrical appliances if they do not know how to. It is safer to get them repaired by an electrician (电工).

小题1:Accidents take place ____.

A.mostly in homes

B.mostly on roads and highways

C.mostly in factories

D.almost everywhere小题2:Which of the following accidents may NOT happen in homes?

A.People may fall to death from high buildings.

B.People may be knocked down by cars on the roads.

C.Gas stoves may cause burns or even fires.

D.People may be killed by an electrical appliance.小题3:People are advised____ .

A.to avoid using electrical appliances

B.to repair their own electrical appliances

C.not to repair their own electrical appliances

D.not to get their electrical appliances fixed

题型:问答题

男性,61岁,活动后心悸、气促5年,加重伴双下肢水肿3个月。查体:血压140/90mmHg,双肺底少许湿性啰音。心界扩大,心率130次/分,心律绝对不齐,心音强弱不等,可闻及舒张期奔马律。心尖区可闻及2/6级收缩期柔和吹风样杂音。肝肋下3cm,脾未触及,双下肢中度水肿。

应重点鉴别的疾病是()

A.高血压性心脏病

B.缺血性心肌病

C.心包积液

D.风湿性心脏病

E.退行性心脏瓣膜病

题型:问答题

由护士双人核对监测( )

A.医师处方差错

B.药师调配处方差错

C.护士执行医嘱差错

D.患者执行医嘱差错

E.全部出现差错

更多题库