题目内容

TPS系统中标准报表中PV值可以是()或()

A. 当前值,历史数据
B. 实时值,当前值
C. 前一时刻值,当前值
D. 实时值,前一时刻值

查看答案
更多问题

按照证据材料的来源不同,可以将其分为()和()。

You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table. Some of the employees may not have a phone number available. Which data manipulation operation do you perform? ()

A. MERGE
B. INSERT
C. UPDATE
D. ADD
ENTER
F. You cannot enter the phone numbers for the existing employee records.

东方电机厂QFSN—300—2型汽轮发电机定子绕组冷却水系统有哪些装置?其作用是什么?

写作题: 请以《如何培养中学生自学能力》为题,写一篇论述文。要求:(1)观点明确,论述具体;(2)条理清楚,语言流畅;(3)不少于800字。

答案查题题库