在下列解决死锁的方法中,属于死锁预防策赂的是 ______。A.银行家算法 B.资源

题型:单项选择题

问题:

在下列解决死锁的方法中,属于死锁预防策赂的是 ______。

A.银行家算法

B.资源有序分配法

C.死锁检测算法

D.资源分配图化简法

考点:计算机等级考试数据库技术操作系统(一)
题型:单项选择题
边长为acm的正方形的面积与长、宽分别为8cm、4cm的长方形的面积相等,则a的值在(  )
A.2与3之间B.3与4之间C.4与5之间D.5与6之间
题型:单项选择题

电影院的第一排有10个座位,后面一排比紧挨的前面一排多一个座位.

(1)如果某电影院2号厅有6排座位,那么该厅一共有多少个座位?

(2)如果有n排座位,那么该厅第n排有几个座位?该厅最后3排一共有多少个座位?若n为奇数,那么该厅一共有多少个座位?(用含n的代数式表示)

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The Lake District in north-west England is an area remarkably little affected by industrialization. The principal activity is still sheep-farming, as it has been for a thousand years, and many ancient words like "fell" for "hill" and "tam" for "lake" are still in daily use. In spite of its heavy rainfall and relative inaccessibility, its special atmosphere and spectacular natural beauty combine to make this one of England’s favourite holiday areas at all seasons of the year. But at Christmas 1968, still gripped by the fear that foot-and-mouth disease could spread to the hill flocks and sweep like wildfire right up to the Scottish border, it was quieter than ever before in this century. Luckily not a single farm had caught tile infection, the nearest case having been an isolated one at Kendal several weeks before. But every Lakeland farmer knows that one case among the unfenced hill flocks on the fells could lead to complete annihilation of hundreds of thousands of sheep and the virtual end of the district’s principal industry; you cannot replace sheep, acclimatized to their own part of the fell for generations, in the same way that you can replace cattle in a field.
Nobody could remember a Christmas like it, especially Boxing Dab, which is traditionally one of the big outdoor holidays of the Lakeland year. Normally this is a day spent following the mountain packs of hounds, fell-walking and, if the weather is propitious, skiing and skating, but this time there were none of these things. Visitors were actively discouraged, and those who did come were asked not to go on the fells, footpaths or bridleways or near farmland, while motorists were requested not to drive on minor roads and to shun the smaller valleys. The enterprising hotels which had earlier in the year decided to keep open during the winter were by the end of October having a desperate time. Hundreds of bookings had been cancelled and scores of dinner parties and young farmers’ reunions eliminated. All youth hostels were closed. At least one climbing club, unable to climb, substituted a training programme of films and simulated climbs on the more substantial municipal buildings.
The weather in the area was dry, crisp, windless and cold, in fact ideal for brisk outdoor activities. But nobody was able to enjoy it. Everything was stopped: hunting, walking, climbing, skiing, motor cycle trials, sporting events of every description. All the seasonal dances, festivals, conferences, shepherds’ meets and a hundred and one, other social occasions abandoned. The ice was bearing on some of the lakes but you could not go skating there. Meanwhile the foxes, emboldened by an unprecedented freedom from harassment, were stalking closer to the farms and the flocks of Christmas turkeys, while the hounds sulked miserably in their kennels.
Farmers are apt to criticize some sections of the outdoor fraternity for their occasional thoughtless behaviour, but the way that walkers, climbers, skiers, fishermen, hunters and the rest went out of their way to help them at this time should never be forgotten. The general public, locals and visitors alike, tried to give the fell farmers a sporting chance, and this remarkable display of public spirit was the one bright note in a very sad time.

Because the sheep in the hills are unfenced foot-and-mouth disease might______.

A.(A) spread beyond the lakes

B.(B) annihilate thousands of horses

C.(C) lead to the virtual end of the tourist industry

D.(D) destroy the flocks of sheep completely

题型:单项选择题

THDS-A红外轴温探测系统IPC工作模块中,实时数据显示区域,下列()是内探信息。

A、大门状态

B、挡板状态

C、器件温度

D、制冷电流

E、板温

题型:单项选择题

肾上腺皮质激素中,“束状带细胞分泌,主要是皮质醇”属于()

A.性激素

B.肾上腺素

C.盐皮质激素

D.糖皮质激素

E.去甲肾上腺素

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