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【简答题】
如图是实验室用于制取气体并验证其性质的装置图,根据要求回答下列问题. (1)实验室用高锰酸钾制取氧气的化学方程式为______,所选用的发生装置是______(填字母) (2)实验室制取二氧化碳的化学方程式为______所选用的收集装置是______(填字母). (3)用排空气法收集一瓶氧气,将带火星的木条放在瓶口时,若观察到______说明瓶中已充满氧气. (4)E装置利用燃烧红磷消耗瓶内的______,减小瓶内压强,使烧杯中的水倒流到瓶中,从而间接测定出空气中氮气的含量.
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【判断题】现金存入银行时,为避免重复记账只编制银行存款收款凭证,不编制现金付款凭证。(    )
A.
正确
B.
错误
【单选题】Which of the following factors is a demographic component of an organization's external environment?
A.
geographic location
B.
political stability
C.
lifestyles and behavior
D.
stock market fluctuations
【单选题】马,尿少色浓,频频千咳,昼轻夜重,痰少津干,低热不退,舌红少苔,脉细数.该病可能治疗原则是(2014 真题下196)
A.
补肺益气,止咳定喘
B.
滋阴生津、润肺止咳
C.
疏风散热,宣肺通气
D.
宜肺散寒,祛痰止咳
E.
清肺化痰,止咳平喘
【简答题】What leading demographic factors must an Internet portal like AOL consider when marketing its products? Why is each factor so important to AOL?
【单选题】Which belongs to the demographic component among the following factors?
A.
Inflation
B.
Attitudes
C.
Education level
D.
Commercial laws
【判断题】现金存入银行时,为避免重复记账只编制银行存款收款凭证,不编制现金付款凭证。( )
A.
正确
B.
错误
【简答题】现金存入银行时,为避免重复记账只编制银行存款收款凭证,不编制现金付款凭证。 ( )
【单选题】Which of the following factor is NOT among the factors of demographic analysis?
A.
Gender
B.
Location
C.
Religion
D.
Cultural background
【单选题】关于天文学,下列说法错误的是( )
A.
“七月流火”的“火”指的是火星
B.
北斗七星位于大熊座
C.
哈雷彗星环绕太阳一周需要76周年
D.
太阳除了自转,还绕着银河系的中心运动
【单选题】The demographic factors of gender, age, and income often do not sufficiently explain why consumer buying behaviour varies. Frequently, differences in consumption patterns among people of the same age ...
A.
a.     internalization
B.
b.     segmentation
C.
c.     the family life cycle
D.
d.     perceptual positioning
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