During the examination season, my mood _____ between happiness and gloom.

A . I’m so happy! B . No, I’m not good at studying. C . Yes. May I succeed. D . Thank you, the same to you.

A . have not been admitted B . didn’t admit C . will not be admitted D . don’t admit

A . grading B . naming C . ranking D . grouping

A . overtook B . undertook C . underwent D . withstood

A . disappointing with B . disappointed on C . disappointed with D . disappointing for

A．was B．were C．has D．have

A. preparing B. prepared C. prepare D. to prepare

A．preparing for B．preparing C．to prepare D．to prepare for

A．Gross national product B．Trade policy C．Exchange rates D．Firm competition

<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/e0e7e26248da659a6662e982bf95acc3.jpg' /> A.The SELECT statement is syntactically accurate. B.The SELECT statement does not work because there is no HAVING clause. C.The SELECT statement does not work because the column specified in the GROUP BY clause is not in the SELECT list. D.The SELECT statement does not work because the GROUP BY clause should be in the main query and not in the subquery.

<img src='https://img2.soutiyun.com/shangxueba/ask/64230001-64233000/64231578/d39131b84ca6a8d8b08830b9d4753c7b.jpg' /> <img src='https://img2.soutiyun.com/shangxueba/ask/64230001-64233000/64231578/4c44618d517b4d4d3a08325cfb73e2e3.jpg' /> A. The ADDM task is filtered to suppress the Segment Advisor suggestions for the SCOTT schema. B. The ADDM task is filtered to produce the Segment Advisor suggestions for the SCOTT schema only. C. The PL/SQL block produces an error because the my_instance_analysis_mode_task task has not been reset to its initial state. D. All subsequent ADDM tasks including my_instance_analysis_mode_task are filtered to suppress the Segment Advisor suggestions for the SCOTT schema.

A:District exams; B:Provincial exams; C:Metropolitan exams; D:Palace exams

<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/31f166c0cedddf6946f2b336e2153075.jpg' /> A. The command performs the recovery and closes the failures. B. The command only displays the advice and the RMAN script required for repair. C. The command produces an error because the ADVISE FAILURE command has not been executed before the REPAIR FAILURE command. D. The command executes the RMAN script to repair the failure and removes the entry from the Automatic Diagnostic Repository (ADR).

是 否

<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/1179420481e271350f195c64f9e527b9.jpg' /> <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/a88968eec9764c2a8638e3aee2b1e23d.jpg' /> A. The statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject. B. The statement returns an error at the SELECT clause. C. The statement returns an error at the WHERE clause. D. The statement returns an error at the ORDER BY clause.

You want to retrieve all employees, whether or not they have matching departments in the departments table. Which query would you use？（）<img src='https://img2.soutiyun.com/shangxueba/ask/18264001-18267000/18266966/2018080111484519157.jpg' /> A. SELECT last_name, department_name FROM employees NATURAL JOIN departments; B. SELECT last_name, department_name FROM employees JOIN departments ; C. SELECT last_name, department_name FROM employees e JOIN departments d ON (e.department_id = d.department_id); D. SELECT last_name, department_name FROM employees e RIGHT OUTER JOIN departments d ON (e.department_id = d.department_id); E. SELECT last_name, department_name FROM employees FULL JOIN departments ON (e.department_id = d.department_id); F . SELECT last_name, department_name FROM employees e LEFT OUTER JOIN departments d ON (e.department_id = d.department_id)

A．降低人体温度 Reduce body temperature B．减少探头移动的阻力 Reduce the resistance when the probe moves C．排除探头和皮肤之间的空气 Remove air between the probe and skin D．消毒 Disinfect

A．on B．in C．off D．out

A、on B、of C、in D、through