一个录音机原价200元,先提价20%,又降价20%,现在的价格是( ) A.20

题型:选择题

问题:

一个录音机原价200元,先提价20%,又降价20%,现在的价格是(  )

A.200

B.240

C.192

D.198

考点:百分数的计算,百分数的应用题
题型:选择题

一件衣服降价20%后是120元,原价是多少元?

题型:选择题

货柜中卷烟摆放整齐、密度适中,忌出现空缺,货柜陈列不满,是卷烟陈列基本原则中的()

A、分类明确原则

B、美观醒目原则

C、丰满繁荣原则

D、附带说明原则

题型:选择题

下列说法正确的是(  )

A.20℃的KNO3饱和溶液升温变成不饱和溶液

B.20℃时KNO3的溶解度是31.6g,则此温度下该饱和溶液溶质的质量分数是31.6%

C.60℃时NaCl饱和溶液中加入5gNaCl后溶质的质量分数变大

D.蒸发NaCl饱和溶液有晶体析出

题型:选择题

什么字符用于在目录路径或文件路径(path)中分隔各目录名和文件名。()

A.slash(/)

B.period(.)

C.dash(-)

D.asterisk(*)

题型:选择题

The approach we propose is a system-oriented methodology for knowledge acquisition, this orientation emphasizes ongoing documentation throughout each cycle and technique applied. Program-wide documentation is suggested, both for the purpose of internal (91) and for later verification and (92) efforts. The documentation system we propose includes a central "knowledge acquisition (93) " which is (94) to reflect knowledge acquisition plans, session nodes, and domain expert participation. Specifically, (95) within the database system include knowledge acquisition forms, which document plans for, and notes from, knowledge acquisition session, domain expert file, and rule content forms.

A. edited B. updated
C. exchanged D. revised

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