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What produces a compiler error？（）  

题目
单选题
What produces a compiler error？（）
A

 class A { public A（int x） {} }

B

 class A {} class B extends A { B（） {} }

C

 class A { A（） {} } class B { public B（） {} }

D

 class Z { public Z（int） {} } class A extends Z {}

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相似问题和答案

第1题：

The error messages given by a C compiler show the message text，the most common(68) of the error，and a suggestion for fixing the error．

A．consequence

B．cause

C．information

D．result


正确答案：B
解析：C编译器给出的错误信息包括信息文本、最常见的错误原因和一个纠正错误的建议。

第2题：

Evaluate the following SQL statement used to create the PRODUCTS table:Which statement is true regarding this command?()

A. It executes successfully but partition pruning cannot happen for this partition key.

B. It produces an error because the TOTAL_VALUE column cannot be used as a partition key.

C. It produces an error because compression cannot be used for the TOTAL_VALUE partition key.

D. It executes successfully but the values in the TOTAL_VALUE column would not be physically stored in the partitions.


参考答案：D

第3题：

What are the basic principles of positive error correction?


参考答案：1) As far as possible, encourage the students, focussing on what they have got right, not on what they have got wrong. 2) Praise the students for correct answers, and even for partly correct answers; in this way, they will feel they are making progress. 3) Avoid humiliating students or making them feel that making a mistake is ‘bad’. 4) Correct errors quickly; if too much time is spent over correcting errors, it gives them too much importance and holds up the lesson.

第4题：

What's（）with your computer?

  • A、faulty
  • B、wrong
  • C、mistake
  • D、error

正确答案:B

第5题：

Evaluate the SQL statement:What is the result of the statement?()

A. The statement produces an error at line 1.

B. The statement produces an error at line 3.

C. The statement produces an error at line 6.

D. The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all departments that pay less salary then the maximum salary paid in the company.

E. The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all employees who earn less than the maximum salary in their department.


参考答案：E

第6题：

What is the outcome of this block of code?()

A. It creates a task and workload, and executes the task.

B. It creates a task and workload but does not execute the task.

C. It produces an error because a template has not been created.

D. It produces an error because the SQL Tuning Set has not been created.


参考答案：A

第7题：

Evaluate the following block of code:What is the outcome of the above code?()

A. It produces an error because a fully qualified host name needs to be specified.

B. It produces an error because the range of ports associated with the hosts has not been specified.

C. It creates an access control list (ACL) with the user ACCT_MGR who gets the CONNECT and RESOLVE privileges.

D. It creates an access control list (ACL) with the user ACCT_MGR who gets the CONNECT privilege but not the RESOLVE privilege.


参考答案：C

第8题：

●The error messages given by a C compiler show the message text,the most common cause of the error,and a suggestion for (73) the error.

(73) A．upfsying

B．fixing

C．changing

D．Editing


正确答案：B
【解析】译文：C编程器给出的错误信息说明了改错误最常见的原因以及纠正方法。

第9题：

What operation on relations R and S produces the relation shown below?

A．Union

B．Difference

C．Intersection

D．Division


正确答案：A

第10题：

What is the MD5 algorithm used for？（）

  • A、takes a fixed-length message and produces a 128-bit message digest
  • B、takes a variable-length message and produces a 168-bit message digest
  • C、takes a message less than 2^64 bits as input and produces a 160-bit message digest
  • D、takes a variable-length message and produces a 128-bit message digest ActualTests.com

正确答案:D

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