集中战略的应用条件包括()。
A目标市场在市场容量、成长速度、获利能力、竞争强度等方面具有相对的吸引力
B在目标市场上，没有其他竞争对手采用类似的战略
C企业具有规模经济优势
D购买者群体之间在需求上存在着差异
E企业具有市场优势
查看答案
急性左心衰竭，立即高流量鼻管给氧，()ml/s纯氧鼻管吸入
A30～40
B10～20
C5～10
D20～30
经营资源中的无形资源包括()。
A商誉
B人力资源
C财务资源
D组织资源
E技术资源
Exhibit:
BULK INSERT Ezonexam.dbo.employees
FROM ‘tk\africe\fubar512.txt’
WITH DATAFILETYPE = ‘char’,
FIELD/TERMINATOR = ‘\t’,
ROWTERMINATOR = ‘\n,’
TABLOCK
You work as database administrator at Ezonexam.com. You handle one SQL Server 2000 computer.
How should you improve the performance of the query in the exhibit above？
A. Extend the BULK INSERT statement with the BATCHSIZE option set it to equal to 5 percent of the number of rows to be loaded.
B. Extend the BULK INSERT statement with the BATCHSIZE option set it to equal to 10 percent of the number of rows to be loaded.
C. Extend the BULK INSERT statement with the ROWS_PER_BATCH option set it to equal to 5 percent of the number of rows to be loaded.
D. Extend the BULK INSERT statement with the ROWS_PER_BATCH option set it to equal to 10 percent of the number of rows to be loaded.
E. Insert a line before the BULK INSERT statement that drops the indexes for the customers table. Insert a line after the BULK INSERT statement that recreates the indexes for the customers table.
F. The TABLOCK option should be removed.
G. The ROWTERMINATOR line should be removed.
在一个单音节语素构成一个词的情况下，一个汉字表示的是一个词，这时一个汉字和一个词是相当的。()
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