更多“1- 下列各数中,有效数字位数为四位的是( )。 A. B.”相关的问题
下列属于传播的客体的是（）。
A.1945年日本投降B.槐树花粉C.H1N1流感病毒D.木马程序
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下列有关组织文化和组织设计间关系的陈述，正确的是（）
A.组织的规范化有助于形成鼓励创新的文化组织 B.管理层次越多，越有利于培养员工的自主性和主动性 C.以内部招聘为主的组织有利于形成强调稳定的组织文化 D.个人绩效评估体系有利于培养员工的合作精神
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支持采用卫星传输链路来实现的E1传输，此时Abis口单向传输延时为多少ms（）
A . 130
B . 200
C . 260
D . 300
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立体构成表达形式是图式的，构思方式是数理的。（)
立体构成表达形式是图式的，构思方式是数理的。()
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二次型是()。
A.负定的B.半负定的C.正定的D.半正定的
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Being a man has always been dangerous. There are about 105 males born for every 100 females, but this ratio drops to near balance at the age of maturity, and among 70-year-old there are twice as many women as men. But the great universal of male mortality is being changed. Now, boy babies survive almost as well as girls do. This means that, for the first time, there will be an excess of boys in those crucial years when they are searching for a mate. More important, another chance for natural selection has been removed. Fifty years ago, the chance of a baby (particularly a boy baby) surviving depended on its weight. A kilogram too light or too heavy meant almost certain death. Today it makes almost no difference. Since much of the variation is due to genes, one more agent of evolution has gone. There is another way to commit evolutionary suicide: stay alive, but have fewer children. Few people are as fertile as in the past. Except in some religious communities, very few women have 15 children. Nowadays the number of births, like the age of death, has become average. Most of us have roughly the same number of offspring. Again, differences between people and the opportunity for natural selection to take advantage of it have diminished. India shows what is happening. The country offers wealth for a few in the great cities and poverty for the remaining tribal peoples. The grand mediocrity of today--everyone being the same in survival and number of offspring--means that natural selection has lost 80% of its power in upper-middle-class India compared to the tribes. For us, this means that evolution is over; the biological Utopia has arrived. Strangely, it has involved little physical change. No other species fills so many places in nature. But in the past 100,000 years--even the past 100 years--our lives have been transformed but our bodies have not. We did not evolve, because machines and society did it for us. Darwin had a phrase to describe those ignorant of evolution: they" look at an organic being as a savage looks at a ship, as at something wholly beyond his comprehension. "No doubt we will remember a 20th century way of life beyond comprehension for its ugliness. But however amazed our descendants may be at how far from Utopia we were, they will look just like us.
A．A lack of mates.B．A fierce competition.C．A lower survival rate.D．A defective gene.
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．调制解调器的作用是实现__________信号和________信号之间的转变；数字数据在数字信道上传输前需进行________，以便在数据中加入时钟信。
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A . 饮用洁净的水,把水烧开了再喝B . 买消毒牛奶,不食用未经加工的牛奶C . 菜刀、菜板用前都应清洗干净,先切生食,后切熟食D . 尽量用封闭的容 器装食物
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天窗架的扩大模数为()M，即6000mm、9000mm、12000mm等。
A、3B、5C、6D、30
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填写表2中用字母表示的空格。 表2公司市场价值与平均资本成本
公司息税前利润为600万元，公司适用的所得税税率为25％，公司目前总资本为2000万元，其中80％由普通股资本构成，股票账面价值为1600万元，20％由债券资本构成，债券账面价值为400万元，假设债券市场价值与其账面价值基本一致。各期息税前利润保持不变，且净利润全部分配。该公司认为目前的资本结构不够合理，准备用发行债券回购股票的办法予以调整。经咨询调查，目前债务利息率和权益资本成本率情况见表1。
表1债务利息率与权益资本成本率
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大陆法系又称( )
A．罗马一日耳曼法系
B．民法系
C．成文法系
D．普通法系
E．判例法系
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What is the average starting salary this year().
A. $46,000.
B. $50,000.
C. $55,000.
D. $56,000.
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细菌转化现象是1928年由阿委瑞（Avery）发现的，而重复出这种现象并证明转化因子是DNA的，则是格里费斯（Griffith）。
A.对 B.错
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血白细胞增多，异型淋巴细胞比例常高于10%，多见于（）
\tA．伤寒
\tB．中毒型菌痢
\tC．流行性乙型脑炎
\tD．急性病毒性肝炎
\tE．流行性出血热
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科技论文须满足的特点是（）。
A、创新性
B、理论性
C、科学性
D、规范性
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（由十点题库聘请的专业题库老师提供的解答）
