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【判断题】
儿子作文比赛得了第一,母亲却说她小时候作文写得好要好。她这样说是为了激励孩子成为作家。A.
正确
B.
错误
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【简答题】Tom and Mike are good friends. They are kind to children. They want to find summer jobs. One day Tom tells Mike that Beidaihe Kids Summer Camp needs help with sports, music and computers. They are bot...
【单选题】下列关于误差的说法正确的是
A.
误差分为系统误差与非系统误差两类
B.
非系统误差属于随机误差的一种
C.
系统误差不可能被消除或控制
D.
非系统误差是由研究者偶然失误造成的
【简答题】Tom and Mike are good friends．They are kind to children， They want to find summer jobs．One day Tom tells Mike that Beidaihe Kids Summer Camp needs help with sports, music and computers．They are both v...
【简答题】Tom and Mike are good friends. They are kind to children. They want to find summer jobs. One day Tom tells Mike that Beidaihe Kids Summer Camp needs help with sports, music and computers. They are bot...
【单选题】--- Where did Tom go last summer?
A.
- He __________ have a chance to visit Hong Kong Disneyland last summer.
B.
was enough lucky to
C.
was lucky enough to
D.
was to enough lucky
E.
was lucky to enough
【单选题】下列关于误差的说法正确的是()
A.
误差存在于一切测量之中，并贯穿于整个物理实验的始终
B.
系统误差可以通过多次测量进行消除
C.
测量时，只要做到认真，读数准确，就可消除偶然误差
D.
误差就是差错，只不过误差可以计算，差错是日常用语，二者没有本质区别
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