IP协议提供哪种服务?()
A、无连接服务
B、面向连接的服务
C、虚电路服务
D、以上都不是
良性前列腺增生,术后气囊导管的拔除时间是术后的()
A、7天内
B、10天
C、14天
D、2~3天
E、7天
You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns: Which SELECT statement accomplishes this task?()
A、 SELECT* FROM customers;
B、 SELECT name, address FROM customers;
C、 SELECT id, name, address, phone FROM customers;
D、 SELECT cust_name, cust_address FROM customers;
E、 SELECT cust_id, cust_name, cust_address, cust_phone FROM customers;
缺血性脑血管疾病的主要治疗措施是()
A、血管扩张剂
B、利尿剂
C、脱水剂
D、抗凝治疗
E、镇静剂
When a database administrator chooses the dimensions for an MDC table, which two characteristics should beconsidered?()
Athe query transaction rate
Bnumeric data versus character data
Cextent size
Dthe cardinality of the candidate columns
Eprefetch size