Use the following code to answer the following questions: int id = 0; cout &#91;< "ID: "; cin &#93;> id; if (id == 1) cout << "Janet"; else if (id == 2 || id == 3) cout << "Mark"; else if (id == 4) cout << "Jerry"; else cout << "Sue"; (1) The above code display ____when the id variable contains the number 2? (2) The above code display ____when the id variable contains the number 4? (3) The above code display ____when the id variable contains the number 3? (4) The above code display ____when the id variable contains the number 8

下来定义表的约束语法,错误的是() A: create table t1(id number primary key,name varchar2(10)) B: create table t1(id number constraint p_k primary key(id),name varchar2(10)) C: create table t1(id number constraint p_k primary key,name varchar2(10)) D: create table t1(id number,name varchar2(10),primary key(id))

The important information is on the （ ）: airline, flight number, date, seat number, boarding time, gate number, etc. A: tag B: baggage C: boarding pass D: ID card

What information is not necessary when checking in at a hotel? ( ) A: ID card number B: name C: working unit D: passport number

如果QUANTITY的值为空值(null)，在执行以下哪个语句时会显示一个0 A: SELECT id_number, 100/quantity B: FROM C: inventory; D: SELECT id_number, NVL(100/quantity, 0) E: FROM F: inventory; G: SELECT id_number, NULL(100/quantity, 0) H: FROM I: inventory; J: SELECT id_number, TO_CHAR(100/quantity, 0) K: FROM L: inventory; M: SELECT id_number, NVL(100/quantity, ’999.00’) N: FROM O: inventory;

Given 130.130.10.1/18, what does /18 mean? A: The port number of the server B: The number of bits dedicated to the network ID C: The number of subnets D: The last 18 bits dedicated to the host ID.

A record in a database can record the ( ) of Mr. Clinton. A: major B: birth day C: ID number D: address

5. Thieves would love to get hold of your personal information such as . A: credit card numbers B: banking information C: ID number D: all of the above

中国大学MOOC: Fill in each blank with the proper form of the word given in brackets. You should not send ( person ) ____________ information such as your ID number via email.

创建一条弧线的函数是（ ）。 A: arc(number x, number y, number r, number sAngle, number eAngle, boolean counterclockwise) B: rect(number x, number y, number width, number height) C: arcTo(number x1, number y1, number x2, number y2, number radius) D: fillRect(number x, number y, number width, number height)