There are several advantages in making
computers as small as one can. Sometimes weight is particularly important. A
modern aircraft, for example, carries quite a load of electronic apparatus. If
it is possible to make any of these smaller, and therefore lighter, the aircraft
can carry a bigger pay-load. This kind of consideration applies to space
satellites and to all kinds of computers that have to be carried
about. But weight is not the only factor. The smaller the computer the faster it can work. The signals go to and fro at a very high but almost constant speed. So if one can scale down all dimensions to, let us say, one tenth, the average lengths of the current-paths will be reduced to one tenth. So, very roughly speaking, scaling down of all linear dimensions in the ratio of one to ten also gives a valuable bonus: the speed of A. the speed of its operation will go up ten times B. the electric signals will go to and fro ten times faster C. its operation speed will remain constant D. its weight will be reduced to one tenth [判断题]从业人员在300人以上的高危生产经营单位和从业人员在1000人以上的其他生产经营单位,应当建立本单位的安全生产委员会。( )
A.正确 B.错误 [多选题] 我公司闪蒸系统效数有( )种。
A.十一效 B.六效 C.十四效 D.十五效 E.十六效 F.十七效" [单项选择]
So what is depression Depression is often more about anger turned (1) than it is about sadness. But it’s usually (2) as sadness. Depression can (3) at all ages, from childhood to old age, and it’s the United States’ No. 1 (4) problem. [单选题]调车组负责扳动的道岔,不能提前准备进路时应在道岔前( )。
A.减速通过 B.可以通过 C.一度停车 D.停车 [单选题]RM7800点火程序器控制的点火程序中,在延长引燃没有开的情况下,引燃火持续时间为( )。
A.A.5 s B.B.10 s C.C.15 s D.D.20 s [简答题]中国民族资产阶级是一个带两重性的阶级,这两重性是指什么?
[单项选择]三相交流绕组的始端A,B,C相每相间相差120°,他们的终端X,Y,Z互差为()。
A. 0° B. 120° C. 30° [简答题]某电网2020年用电量为178亿kWh,若2020-2025年间经济年平均增长率为10%,假定同时期电力弹性系数为0.9。
(1)试用电力弹性系数法预测2025年用电量;
(2)若电网最大负荷利用小时数为5000h,则2025年最大用电负荷为多少(单位:万千瓦)?
(3)根据2)中预测的2025年最大用电负荷,结合表1中的数据,计算2025年电网35kV网供负荷预测结果。
[单项选择]有机磷酸酯类农药是
A. 可逆性抗胆碱酯酶药 B. 胆碱酯酶复活剂 C. 不可逆性抗胆碱酯酶药 D. 胆碱受体拮抗剂 E. 拟胆碱药物 [单选题]"高炉煤气布袋除尘器应设煤气( )温报警和低压报警装置
A.高 B.低 C.高、低" [填空题]油品粘度越小其降温效果()。
[填空题]( )__是专用数字通信系统的核心设备,实现全系统的网络和通道管理功能。
[单选题]单选题]便携危险化学品检测片适用于各种火场和有毒有害( )泄露现场 (1分)
A.气体 B.液体 C.固体 D.化学品 [判断题]空气压缩机的检修应做好电源、气源和冷却液隔离措施。
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