| We all know that programming language
is the system of syntax, grammar, and symbols or words used to give instructions
to a computer. Because computers work with binary numbers, first-generation
languages, called machine languages, required the writing of long strings of
binary numbers to represent such operations as add, subtract, and compare. Later
improvements allowed octal, decimal, or hexadecimal representation of binary
strings. It is difficult to write error-free programs in machine language; many
languages have been created to make programming easier and faster. Symbolic, or
assembly, languages-- second-generation languages-- were introduced in the early
1950s. They use simple mnemonics such as "A" for add or "M" for multiply, which
are translated into machine language by a computer program called an a A. it is used in designing software. B. it is hardware-independent. C. is should be translated into the computer language by software. D. it is designed to solve some specific problem. [单选题]受电弓降弓时，从2m高度落下的降弓时间(至绝缘子底面)：( )s。
A.≤4 B.≤4．5 C.≤5．0 [简答题]铁路货物运输包装的总要求是什么？
[单项选择]
There has arisen during this twentieth century (as it arose before, in ages which we like to call dark) a pronounced anti intellectualism, a feeling that both studies and literature are not merely vain, but also (1) untrustworthy. With people swayed by this wrong (2) that there is little use in arguing, either for history or literature, or for poetry or music, or for the arts (3) . [多项选择]以下药物中，哪些容易引起药物中毒性聋（）
A. 庆大霉素 B. 卡那霉素 C. 红霉素 D. 链霉素 E. 氨苄青霉素 [单选题] 型号BH23凿岩机,冲击频率1300~1330次/分钟,排量( )cc,动机转速4250rpm,燃油混合比1:50,燃料消耗( ),油箱容量( )。 ( )
A.80 1.2L/h 1.8L B.70 1.5L/h 1.8L C.1000 1.2L/h 1.8L D.90 1.2L/h 1.8L [填空题]电杆洞深应符合规范要求，8米的水泥电杆在普通土壤上立杆时，洞深应达到（）m深，在水田、湿地的洞深为（）m，洞深偏差应小于（）mm。
[单选题]四冲程柴油机气阀重叠角的位置是在（）。
A.上止点前后 B.下止点前后 C.上止点前 D.排气结束后 [名词解释]可竞争市场
我来回答: 提交
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