其他中型水库和影响县城安全或坝高（）m以上小型水库的大坝安全评价由具有水利水电勘测设计乙级以上（含乙级）资质的单位承担。 10。 20。 30。 40。
Identify two situations in which the block header grows in a data block. （） when row directories need more row entries。 when there is row migration in the data block。 when there is an increase in the PCTFREE value for the data block。 when more transaction slots are required than are initially configured。
Examine the description of the CUSTOMERS table: CUSTOMER_ID NUMBER(4) NOT NULL CUSTOMER_NAME VARCHAR2(100) NOT NULL STREET_ADDRESS VARCHAR2(150) CITY_ADDRESS VARCHAR2(50) STATE_ADDRESS VARCHAR2(50) PROVINCE_ADDRESS VARCHAR2(50) COUNTRY_ADDRESS VARCHAR2(50) POSTAL_CODE VARCHAR2(12) CUSTOMER_PHONE VARCHAR2(20) The CUSTOMER_ID column is the primary key for the table. Which statement returns the city address and the number of customers in the cities Los Angeles or San Francisco?（） SELECT city_address, COUNT(*) FROM customers WHERE city _ address IN ('Los Angeles','San Fransisco');。 SELECT city_address, COUNT (*) FROM customers WHERE city address IN ( 'Los Angeles', 'San Fransisco') GROUP BY city_address;。 SELECT city_address, COUNT(customer_id) FROM customers WHERE city_address IN ( 'Los Angeles', 'San Fransisco') GROUP BY city_address, customer_ id;。 SELECT city_address, COUNT (customer_id) FROM customers GROUP BY city_ address IN ('Los Angeles','San Fransisco')。
李某，20岁。在脑复苏的过程中，提示患者意识即将恢复的表现是（） 瞳孔缩小。 对光反射出现。 眼球活动。 痛觉出现。 听觉恢复。
You have configured the flash recovery area to store online redo log files， control files， archived redo logs and RMAN backups. Which of the following files can you successfully delete from the flash recovery area if you want to reclaim the space within it？（） multiplexed control files。 RMAN obsolete backups。 multiplexed online redo log files。 archived redo logs that have not been copied to tape。
The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration. You executed the following command to startup the Automatic Storage Management （ASM） instance.
SQL> STARTUP；
Which two activities are performed during a successful start up operation？（）
