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【单选题】
下列有关电解质的说法正确的是( )A.
纯水的导电性很差，所以水不是电解质
B.
SO 3 水溶液的导电性很好，所以SO 3 是电解质
C.
液态的铜导电性很好，所以铜是电解质
D.
Na 2 O液态时能导电，所以Na 2 O是电解质
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举一反三
【单选题】Every newborn baby is dealt a genetic hand of cards which helps to determine how long he or she will be allowed to play the game of life. There are good cards, which predispose those who have them to ...
A.
Genes.
B.
Disease.
C.
Problems.
D.
Games.
【单选题】同型半胱氨酸转化为甲硫氨酸需要下列哪种维生素 B 12 同类物参与?
A.
甲基 B 12
B.
5`-脱氧腺苷酸
C.
羟钴铵
D.
氰钴胺
E.
维生素 B 12 - 内因子复合物
【判断题】Take a seat according to the place cards, never try to shift name cards by yourself.
A.
正确
B.
错误
【判断题】If place cards are on the tables, do not shift them to suit yourself in business entertaining.
A.
正确
B.
错误
【单选题】关于慢性胰腺炎叙述错误的是( )
A.
是胰腺外分泌功能不足最常见的病因
B.
50%-80%的慢性胰腺炎外分泌功能下降(平均下降80%-90%)
C.
慢性胰腺炎伴有明显的消化不良和吸收不良，从回肠末端丢失约40%的营养
D.
慢性胰腺炎补充胰酶可减少吸收不良50%(227 kJ)
【单选题】The exchanging of business cards should take place only ___ the first business meeting.( )
A.
At the beginning of
B.
During
C.
After
D.
None of the above
【单选题】At some formal banquets, ________ are put on the table. These cards show the places where people are to sit. People should go to the place where their names are written and seat themselves.
A.
name cards
B.
greeting cards
C.
place cards
D.
business cards
【单选题】We are informed that our ID cards will be ______ by the end of this year. [ ]
A.
taken place
B.
replaced
C.
taken place of
D.
in place of
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