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【单选题】
关于Fragment介绍错误的是( ).A.
在Android3.0版本开始提供了Fragment
B.
Fragment主要应用到平板上
C.
Fragment技术只能应用到3.0之后的系统上.
D.
Fragment可以理解Activity的一部分.
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皮皮学刷刷变学霸
举一反三
【单选题】Thousands of Irish people starved during the “Potato Famine” because
A.
they were so dependent on potatoes that they refused to eat anything else
B.
they were forced to leave their homeland and move to America.
C.
the potato harvest was bad
D.
the weather conditions in Ireland were not suitable for growing potatoes.
【单选题】Thousands of Irish people starved because __________ 查看材料
A.
they depended on the potato
B.
they were forced to move to America
C.
the weather conditions in Ireland were not fit for growing the potato
D.
the potato harvest was bad
【单选题】如图所示电路中含有理想变压器，一次侧匝数为N1，二次侧匝数为N2，n=N1/N2。当一次侧由电流源is激励时，在保持一次侧匝数不变的前提下，若要使得R2上的功率增加，二次侧匝数N2应_________【图片】
A.
增加
B.
减少
C.
不变
D.
不能确定
【简答题】Ireland became so dependent on it that hundreds of thousands of Irish people starved when the crop failed during the 'Potato Famine (饥荒)'of 1845-1846, and millions more were forced to leave their home...
【简答题】回弹法检测单个构件混凝土强度时，结构或构件的混凝土强度推定值等于构件中最小的测区混凝土强度换算值。( )
【简答题】Thousands of Irish people starved during the'Potato Famine'because
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