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【简答题】
Android 系统内置了 _____________ 数据库,这是一款轻量级的关系型数据库,不仅支持标准的 SQL 语法,还遵循数据库的 ACID 事务。
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皮皮学刷刷变学霸
举一反三
【单选题】在液相色谱中,改变洗脱液极性的作用是( )
A.
减少检验过程中产生的误差
B.
缩短分析用时
C.
使温度计更好看
D.
对温度计进行校正
【单选题】在试算平衡表上,虽然实现了期初余额、本期发生额和期末余额三栏的恒等关系,但仍然不能保证账户记录是完全正确的。( )
A.
正确
B.
错误
【单选题】we had hardly got to the station ( )it began to rain.
A.
until
B.
since
C.
while
D.
when
【简答题】消费品市场的特点是什么
【单选题】消费品市场的特点是(      )
A.
市场较集中
B.
购买人数多而散
C.
专用性较强
D.
购买决策常为集体决策
【单选题】消费品市场的特点是( )。
A.
市场较集中
B.
购买人数多而散
C.
专业性较强
D.
购买决策常为集体决策
【单选题】We had hardly got to the school it began to rain.
A.
until
B.
since
C.
while
D.
when
【单选题】Hardly ____ into the country ____ it began to rain.
A.
we had got; when
B.
we got; than
C.
had we got; when
D.
did we get; than
【单选题】Hardly had we got to the station_______the train left.
A.
than
B.
as
C.
with
D.
when
【单选题】Hardly had we got on the bus __ it began to rain.
A.
when
B.
since
C.
but
D.
before
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