【單選題】設(shè) x,y 均為已定義的類(lèi)名,下列聲明對(duì)象x1的語(yǔ)句中正確的是( )

【判斷題】構(gòu)造函數(shù)的方法名可以由編程人員任意命名。

【單選題】能夠?qū)崿F(xiàn)對(duì)原文的鑒別和不可否認(rèn)性的認(rèn)證技術(shù)是( )。

【單選題】設(shè)有定義語(yǔ)句int a[]={66,88,99}; 則以下對(duì)此語(yǔ)句的敘述錯(cuò)誤的是( )。

【判斷題】Unicode碼與ASCII碼相同。

【多選題】已知如下定義:String s = “story”, 下面哪個(gè)表達(dá)式是合法的:

【單選題】定義主類(lèi)的類(lèi)頭時(shí)可以使用的訪(fǎng)問(wèn)控制符是( )

【單選題】下列程序段執(zhí)行后t1的結(jié)果是( )。int x1 = 9, x2 = 6, t1; t1 = x1 > x2 ? x1 : x2;

【填空題】定義類(lèi)的保留字是(__)定義接口的保留字是(__);

【多選題】以下屬于正確的java注釋有

【單選題】方法的作用不包含:( )

【填空題】listening unit test 1-5 Unit 7 滿(mǎn)分: 10 分 Part I Directions: In this section, you’ll hear some passages. At the end of each passage, you'll hear some questions. Both the passage and the questions will be spoken only once. After each question, choose the best answer from the four choices marked A, B, C, and D. Questions 1 to 4 are based on the passages you have just heard. 1 ) A . Doing a business. B . Signing a contract. C . Making a travel. D . Starting a new trade. 2 ) A . Receiving a diamond ring. B . Getting a bunch of flowers. C . Obtaining a large amount of money. D . Receiving a new house. 3 ) A . Have the ceremony in a church. B . Get married in a scenic spot. C . Have the ceremony while riding on horseback. D . Have the ceremony in a hotel. 4 ) A . The style of colors, decorations and music. B . The bride wears a long white wedding dress. C . The wedding places and the clothes for the guests. D . The way of inviting friends to the ceremony. Questions 5 to 7 are based on the passages you have just heard. 5 ) A . All those who get on well with each other are friends. B . Friends are closer than people who just get on well with each other. C . Everyone understands clearly how to make friends. D . Factors like age and background aren’t important in friendship. 6 ) A . Even friends may have differences of opinions. B . Supporting and understanding in friendship results from shared background. C . It generally takes time for people to become close friends. D . Someone’s habits may annoy his or her friends. 7 ) A . They must hold a ceremony to create a powerful bond. B . They have to eliminate differences in background. C . They should make friends with those who are of same age and race. D . They should support and understand each other. Part II Directions: In this section, you will hear some news reports. At the end of each news report, you will hear some questions. Both the news and the question will be spoken only once. After each question, Choose the best answer from the four choices marked A, B, C, and D. Questions 8 to 10 are based on the passages you have just heard. 8 ) A . Intelligent and educated. B . Sociability and good cook. C . Dependable character. D . Mutual attraction and love. 9 ) A . 17th place. B . 20th place. C . Last place. D . 12th place. 10 ) A . Someone who is well educated and a good cook. B . Someone who is good at housekeeping and cooking. C . Someone who can share the financial burden. D . Someone who has a good appearance.

【填空題】Java程序結(jié)構(gòu)分為(__),(__)和(__)三種;

【單選題】既能發(fā)電 , 又能儲(chǔ)存能量的是 ( ) 。

【單選題】結(jié)合了不同類(lèi)型的防火墻特點(diǎn)的是( )。

【填空題】面向?qū)ο蟪绦虻闹饕卣?繼承,(__),(__);

【多選題】下面句話(huà)是正確的(AD)

【單選題】以下()是規(guī)范交易主體的有關(guān)法律。

【判斷題】一個(gè)Java類(lèi)可以有一個(gè)直接父類(lèi),并可以實(shí)現(xiàn)多個(gè)接口。

【判斷題】Java語(yǔ)言是編譯解釋型語(yǔ)言

【多選題】如下哪些是Java中有效的關(guān)鍵字()

【填空題】Java語(yǔ)言中提供的GUI功能主要由java.awt包和(__)包中的類(lèi)和接口實(shí)現(xiàn);

【填空題】Java將運(yùn)行錯(cuò)誤分為兩類(lèi):(__)和(__), 其對(duì)應(yīng)的類(lèi)均派生自(__)類(lèi);

【判斷題】Java支持多重繼承。

【單選題】為了區(qū)分重載多態(tài)中同名的不同方法,要求( )

【填空題】在Java語(yǔ)言中,邏輯常量只有true和(__)兩個(gè)值;

【多選題】世界各國(guó)立法的基本原則有()。

【判斷題】在 330kV 及以下發(fā)電廠(chǎng)和變電所中一般選用三相式變壓器。 ( )

【判斷題】水平方向布置的三相平行導(dǎo)體在發(fā)生三相短路時(shí) , 最大電動(dòng)力出現(xiàn)在 A 相。 ( )

【單選題】如何強(qiáng)制垃圾回收一個(gè)對(duì)象?

【單選題】廠(chǎng)用高壓變壓器系統(tǒng)接地電流小于10A,高壓變壓器的中性點(diǎn)運(yùn)行方式應(yīng)采用()

【填空題】一個(gè)完整的URL地址由(__),(__)端口和文件四部分組成;

【判斷題】Java的源代碼中定義幾個(gè)類(lèi),編譯結(jié)果就生成幾個(gè)以“.class”后綴的字節(jié)碼。

【單選題】以下( )是正確的域名體系結(jié)構(gòu)。

【單選題】互聯(lián)網(wǎng)的基本特征不包括( )

【單選題】為了使包sos在當(dāng)前程序中可見(jiàn),可以使用的語(yǔ)句是( )

【判斷題】不論是否捕捉到異常try{}catch ){} finaly{}語(yǔ)句中finally塊中的代碼總要被執(zhí)行。

【單選題】1000MW發(fā)電機(jī)組廠(chǎng)用電高壓系統(tǒng)額定電壓采用()

【單選題】公開(kāi)密鑰密碼體制中,加密模式下加密密鑰即( )。

【判斷題】Java中,一個(gè)類(lèi)可以有多個(gè)直接父類(lèi)

【單選題】具有防暴反劫功能的是()

【單選題】以下屬于垂直生鮮電商平臺(tái)的是()。

【填空題】一個(gè)類(lèi)實(shí)現(xiàn)某個(gè)接口時(shí)必須實(shí)現(xiàn)接口中聲明的所有方法,否則該類(lèi)必須定義為(__);

【單選題】以下屬于大電商平臺(tái)生鮮頻道的是().

【單選題】若有定義int a = 2;則執(zhí)行完語(yǔ)句a += a -= a * a; 后,a的值是( )

【填空題】Java采用(__)編碼的字符集,其字符類(lèi)型占用 (__)字節(jié)內(nèi)存空間。

【單選題】符合對(duì)象和類(lèi)關(guān)系的是:

【單選題】在 10KV 出線(xiàn)上 , 電流互感器通常 ( ) 。

【單選題】鍋爐給水泵屬于( )負(fù)荷?

【單選題】以下選項(xiàng)中,合法的賦值語(yǔ)句是( )

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