Which of the following technologies causes a single processor to appear as multiple processors within System Properties in a Windows Server？（）

A、 RISC

B、 Multicore

C、 Symmetric multi-processing

D、 Hyper-V

在Excel2010的饼图类型中，应包含的数值系列的个数（）。

A、1

B、2

C、3

D、任意

下列寻址方式中，最适合按下标顺序访问一位数组元素的是（　　）。

A、相对寻址

B、寄存器寻址

C、直接寻址

D、变址寻址

You notice that the performance of the database has degraded because of frequent checkpoints. Which two actions resolve the issue（）

Disable automatic checkpoint tuning.

Check the size of the redo log file size and increase the size if it is small.

Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor. 

Decrease the number of redo log members if there are more than one redo log members available in each redo log group.

Which two statements are true concerning the Resource Manager plans for individual pluggabledatabases (PDB plans) in a multitenant container database (CDB)?（）

If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that pdb.

In a PDB plan, subplans may be used with up to eight consumer groups.

If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the cdb.

If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.

If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.

Click the Exhibit button to examine the structures of the EMPLOYEES and TAX tables. You need to find the percentage tax applicable for each employee. Which SQL statement would you use?（）

A、 SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t ON e.salary BETWEEN t.min_salary AND t.max_salary;

B、 SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t WHERE e.salary > t.min_salary AND < t.max_salary;

C、 SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t ON (MIN(e.salary) = t.min_salary AND MAX(e.salary) = t.max_salary);

D、 You cannot find the information because there is no common column between the two tables.