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[简答题]62) The method of scientific investigation is nothing but the expression of the necessary mode of working of the human mind; it is simply the mode by which all phenomena are reasoned about and given precise and exact explanation. There is no more difference, but there is just the same kind of difference, between the mental operations of a man of science and those of an ordinary person, as there is between the operations and methods of a baker or of a butcher weighing out his goods in common scales, and the operations of a chemist in performing a difficult and complex analysis by means of his balance and finely graded weights. It is not that the scales in the one case, and the balance in the other, differ in the principles of their construction or manner of working; but that the latter is much finer apparatus and of course much more accurate in its measurement than the former.
You will understand this better, perhaps, if I give you some familiar examples. 63) You have
[单项选择]
计算机中常用的一种检错码是CRC，即 (11) 码。在进行编码过程中要使用 (12) 运算。假设使用的生成多项式是C(x)=x4+x3+x+1。原始报文为11001010101，则编码后的报文为 (13) 。CRC码 (14) 的说法是正确的。在无线电通信中采用7中取3定比码，它规定码字长为7位，并且其中总有且仅有3个“1”则编码效率为 (15) 。
14（）
A. 可纠正一位差错
B. 可检测所有偶数位错
C. 可检测所有小于校验位长度的突发错
D. 可检测所有等于、小于校验位长度的突发错
[单项选择]国内某有进出口经营权的服装加工公司与我国台湾地区某公司签订一份为期5年的来料加工纯棉服装的协议。在协议中订明由我国台湾某公司不作价提供工业缝纫机(属机电产品进口许可证管理、法定检验)50台作为加工生产专用。在首期加工合同中订明由我方为台湾某公司来料加工5万打纯棉男式内衣，由外商提供纯棉面料，属加工贸易限制类商品。合同签订后，该服装加工厂到海关办理了备案手续。
根据上述案例，解答下列问题：
该合同中的进口料件的保税期限是( )。
A. 一年，可以两次申请延长，每次延长的最长期限为一年
B. 一年，可以申请延长，延长的最长期限为半年
C. 半年，不可以延长
D. 年，可以申请延长一年
[填空题]汉字按结构可分为______和______两大类。
[单项选择]最易通过产道分娩的胎位是
A. 枕左前位
B. 枕右后位
C. 颏左前位
D. 骶右横位
E. 肩左前位
[填空题]
Directions: There are 15 blanks in the
passage. For each blank, some letters of the word have been given (not exceeding
3 letters). Read the passage below and think of the word which best fits
each blank, Use only one word in each blank.
Today the car is the most popular sort of transportation in all of the
United States. It has completely re{{U}} (77) {{/U}} the horse as a m{{U}}
(78) {{/U}} of everyday transportation. Americans use their car for
nearly 90% of all per{{U}} (79) {{/U}} business. Most Americans are able
to buy cars. The average price of a regularly m{{U}} (80) {{/U}} car was
50 in 1950, 470 in 1960 and up to, 750 in 1975. D{{U}} (81) {{/U}} this
period American car manufactures set about im{{U}} (82) {{/U}} their
products and work efficiency. As a result, the yearly income of the av{{U}}
(83) {{/U}} family increased from 1950 to 1975 f{{U}} (84)
{{/U}} than the price of cars. For this re
[填空题]tells a very simple story but it contains some messages
[简答题]使用KV系列杀毒软件对E盘HTT文件进行病毒扫描，并设置清除病毒前先备份。
[单项选择]高耸结构设计时，下列______项不是偶然组合的极限状态表达式确定原则
A. 只考虑一种偶然作用与其他可变荷载组合
B. 偶然作用的代表值不应乘分项系数
C. 与偶然作用同时出现的可变荷载可根据具体情况采用相应的代表值
D. 当偶然荷载作用效应对结构有利时，分项系数取1.0，当偶然作用效应对结构不利时，分项系数取1.20
[单项选择] New Technique Promises Earlier Cancer Detection
A new technique could revolutionize the early detection of cancer, giving sufferers a greater chance of beating the disease, American scientists said. Researchers at the Massachusetts Institute of Technology have devised a novel method of 【51】 changes in the nucleus of cells in the earliest stages of the disease." More than 85 percent of all cancers originate in the epithelium (上皮) that lines the internal surfaces of organs 【52】 the body. Although these are treatable 【53】 they are diagnosed in one of the preventable stages, early body damages are almost 【54】 to detect," said scientist Feld. " We present a new optical-probe (光学探子) technique based on light-scattering spectroscopy (分光镜检查) that is able 【55】 detect precancerous and early cancerous cells in cell-rich epithelia," he added in a statement.
The new technique relies on the fact 【56】 cell nuclei change in the early stages of cancer and the differences scatte
A. significantly
B. doubtfully
C. hardly
D. severely
