● (75) is a sequence of letters and digits,the first character mustbe a letter.(75) A．An identifierB．A stringC．An arrayD．program
题目
● (75) is a sequence of letters and digits,the first character mustbe a letter.
(75) A．An identifier
B．A string
C．An array
D．program
相似考题
参考答案和解析
【解析】略。
更多“● (75) is a sequence of letters and digits,the first character mustbe a letter.(75) A．An identifierB．A stringC．An arrayD．program”相关问题
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第1题：
下列程序的运行结果是( )。 public class Sun { public static void main(String args[ ]) { int number,digits; number=53; if(number＜10) digits=1; else if(number＜100) digits=2; else digits=3; System.out.println(digits); } }
A．1
B．2
C．3
D．0
正确答案：B
解析：本题考查对if-else条件语句的理解。本题是if-else语句的嵌套，首先number=53，不满足number10，执行else部分，else部分是嵌套的if-else语句，满足number100，所以digits=2。故本题答案是B。 -
第2题：
Information, in its most restricted technical sense,is a sequence of symbols that can be interpreted as a messag
A.Information can be recorded as signs,or transmitted as__(75)__.
B.symbols
C.message
D.signals
E.wav
正确答案：C
从最严格的技术角度来看，信息是一个代表消息的符号序列。信息可以被标记记录，或者是以信号的方式来传送。 -
第3题：
is a sequence of letters and digits, the first character must be a letter.
A．An identifier
B．A string
C．An array
D．program
正确答案：A
解析：译文：标识符是由字母或数字构成的序列，其第一个字符必须是字母。 -
第4题：
A sequence of any number of characters enclosed in the double queotes“”is called a character ______.
A．array
B．group
C．set
D．string
正确答案：D
解析：译文的含义是：双引号“”中括起来的若干字符序列叫做()。选项A、B、C、D的含义分别是数组、组、集合、字符串，选项D为正确答案。 -
第5题：
● （75） Development is a structured design methodology that proceeds in a sequence from one phase to the next.
（75）
A. Waterfall
B. Phased
C. Prototyping
D. Parallel
正确答案：A
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第6题：
The keyboard of a typewriter refers to the set of keys in it.Most typewriters have"qwerty"key-boards.The name crones from the first six letters on the board′s second line.The"qwerty"board was?set up by C.L.Sholes,who was the first man to make a really good typewriter.
Some letters,such as S and T,are used together a great deal in English.Sholes placed such?pairs of letter far apart on his keyboard.This made it harder for typists to learn the keyboard.But it?helped keep typewriters from jamming.On early machines the bars holding the letters often caught on?each other when moving quickly.
Sholes made the name of his machine easy to type.lie placed on the same line all the letters of?the word"type"and"writer".
This article is mostly about a__________.A.pair of letters
B.keyboard
C.language
D.man's life答案：B解析：从第一段第一句可知，这篇文章主要谈论的是keyboard。故B项正确。 -
第7题：
The keyboard of a typewriter refers to the set of keys in it.Most typewriters have"qwerty"key-boards.The name crones from the first six letters on the board′s second line.The"qwerty"board was?set up by C.L.Sholes,who was the first man to make a really good typewriter.
Some letters,such as S and T,are used together a great deal in English.Sholes placed such?pairs of letter far apart on his keyboard.This made it harder for typists to learn the keyboard.But it?helped keep typewriters from jamming.On early machines the bars holding the letters often caught on?each other when moving quickly.
Sholes made the name of his machine easy to type.lie placed on the same line all the letters of?the word"type"and"writer".
The"qwerty"was first set up__________.A.with thirty-six letters
B.in six lines
C.by C.L.Sholes
D.All of the above答案：C解析：qwerty是由C．L．Sholes首创的。故C项正确。 -
第8题：
多选题Which four statements correctly describe functions that are available in SQL? （）AINSTR returns the numeric position of a named character.
BNVL2 returns the first non-null expression in the expression list.
CTRUNCATE rounds the column, expression, or value to n decimal places.
DDECODE translates an expression after comparing it to each search value.
ETRIM trims the heading of trailing characters (or both) from a character string.
FNVL compares two expressions and returns null if they are equal, or the first expression of they are not equal.
GNULLIF compares twp expressions and returns null if they are equal, or the first expression if they are not equal.
正确答案： E,D解析： 暂无解析 -
第9题：
问答题You are looking for one word in this paragraph. The word appears only once, its first letter is the eighth letter which appears after a certain vowel and the same vowel is the fifth letter before its last letter.正确答案： paragraph解析：
paragraph这个单词在本段中只出现过一次，它的第一个字母和第八个字母都是P，字母P前是元音A，且A也是最后一个字母H前面第五个字母。 -
第10题：
问答题Which letters complete the sequence?正确答案： P;E解析： 根据字母表的顺序，A和C相间隔1个字母B，C和F相间隔两个字母D、E，由此发现规律，第一行每相邻两个字母相间隔的字母数依次为1，2，1，2，1，由此可知M和最后一个字母应间隔2个字母，故应为P。第二行每相邻两个字母相间隔的字母数依次为0，1，2，3，4，由此可知K和最后一个字母应间隔5个字母，故应为E。 -
第11题：
问答题There is a word of 7 letters. The first 3 letters is for female, the first 4 is for a brave man, and the whole is for a brave woman. What word is this?正确答案： Heroine解析：
Heroine意为“女英雄”。 -
第12题：
单选题We can infer from the first paragraph that ______.Athere tends to be disagreement about what character education is
Bmost parents are not satisfied with the teaching methods adopted in schools
Cthe approach to character education is generally considered different from the approaches to other skills
Dmore and m,ore schools are adopting strategies to improve school attendance
正确答案： D解析： -
第13题：
An identifier is a sequence of letters and digits，the first character must be(60)．
A．a letter
B．a string
C．an array
D．a interger
正确答案：A
解析：标识符是一个由字母和数字组成的字符序列，它要求首字符必须是字母。 -
第14题：
Messages that are sent electronically over a network．
(72)A series of instructions(commands) performed in a sequence specifying actions to accomplish a task．
(73)The character code built into most modern personal computers．
(74)The minimal unit of information，it can have the value 1 or 0．
(75)The brains of a computer, it contains the ALU，the clock，many registers，the bus interface，and circuitry that makes these parts work together．
A．input
B．output
C．data
D．E-Mail
正确答案：D
解析：电子邮件——在网络中传播的电子信息。
程序——为完成一个任务而依次执行指定动作的一系列指令(或命令)。
ASCII——大多数现代个人计算机上内建的字符编码。
比特——最小的信息单位，其值为1或者0。
CPU——计算机的“大脑”，它包含算术逻辑部件、时钟、多个寄存器和总线接口以及使各个部件协同工作的电路。 -
第15题：
is a sequence of letters and digits, the first character mustbe a letter.
A．An identifier
B．A string
C．An array
D．program
正确答案：A
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第16题：
A computer program, orjust a program, is a sequence of (75) ,written to performa specified task with a computer.
A.languages
B.instructions
C.programs
D.functions
正确答案：B
译文:一个计算机程序或者一个程序，是一系列的指令，被编写来用计算机执行一个特定的任务。 -
第17题：
● Object-oriented analysis (OOA) is a semiformal specification technique for the object-oriented paradigm. Object-oriented analysis consists of three steps. The first step is （71）. It determines how the various results are computed by the product and presents this information in the form. of a （72） and associated scenarios. The second is （73） , which determines the classes and their attributes. Then determine the interrelationships and interaction among the classes. The last step is （74） , which determines the actions performed by or to each class or subclass and presents this information in the form. of （75） .
（71）
A.use-case modeling
B. class modeling
C. dynamic modeling
D. behavioral modeling
（72）
A. collaboration diagram
B. sequence diagram
C. use-case diagram
D. activity diagram
（73）
A. use-case modeling
B. class modeling
C. dynamic modeling
D. behavioral modeling
（74）
A.use-case modeling
B. class modeling
C. dynamic modeling
D. behavioral modeling
（75）
A. activity diagram
B. component diagram
C. sequence diagram
D. state diagram
正确答案：A,C,B,C,D
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第18题：
The keyboard of a typewriter refers to the set of keys in it.Most typewriters have"qwerty"key-boards.The name crones from the first six letters on the board′s second line.The"qwerty"board was?set up by C.L.Sholes,who was the first man to make a really good typewriter.
Some letters,such as S and T,are used together a great deal in English.Sholes placed such?pairs of letter far apart on his keyboard.This made it harder for typists to learn the keyboard.But it?helped keep typewriters from jamming.On early machines the bars holding the letters often caught on?each other when moving quickly.
Sholes made the name of his machine easy to type.lie placed on the same line all the letters of?the word"type"and"writer".
The"qwerty"board is named for the__________.A.man who set it up
B.company that sold it
C.order of six of its letters
D.letters used the most in English答案：C解析：qwerty是由键盘上6个字母按顺序排列起来组成的。故选C项。 -
第19题：
单选题A password is made up of two letters followed by two single-digit numbers. If a person is assigned a password at random, what is the probability, rounded to the nearest hundredth, that the password uses only even digits for the numbers?A0.25
B0.35
C0.5
D0.15
E0.1
正确答案： B解析：
There are a total of 26 ×26 ×10 ×10 = 67,600 possible passwords, of which 26 ×26 ×5 ×5 = 16,900 use only even digits. P (even digits)= 16900/67,00==0.25 -
第20题：
单选题How many positive 3-digit integers contain only odd digits?A15
B75
C125
D225
E500
正确答案： C解析：
根据题干可知三位数可以从1,3,5,7,9中选出。因为3位数字可以独立的选择，所以三位数字可为5×5×5=125，故选C。 -
第21题：
单选题_____ is made up from the first letters of the name of an organization, which has a heavily modified headword.ACategory
BSynonoymy
CAntonymy
DAcronym
正确答案： A解析：
本题考查词首字母缩略词。利用短语中每个词的第一个字母代表组合成这个词组的缩略词，就叫做首字母缩略词。首字母缩略词是通过组合每个词的首位字母构成新词或是专有名词的形式。 -
第22题：
单选题75 A later B first C now D beforeAA
BB
CC
DD
正确答案： A解析： -
第23题：
单选题The first term in a geometric sequence is 3 and the 4th term is 81. What is the 10th term of the sequence?A177, 147
B59, 049
C19, 683
D6, 561
E2, 187
正确答案： D解析：
First find the common multiplier needed to get from 3 to 81 in 3 steps. This number is 3. Six more steps get us to the 10th term. Therefore 81 × 36 = 59 049.