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【多选题】
下列有关精密度、正确度与准确度描述正确的是( )
A.
精密度是指测量程序在相同条件下,对同一样本进行多次测量所得结果的一致性
B.
正确度是指无限多次测量所得结果均值与被测量真值间的一致程度
C.
准确度是指测定值与接近程度,用绝对偏差和相对偏差表示
D.
正确度与随机误差有关
E.
精密度与系统误差有关
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【单选题】当一船听到他船的雾号显示在本船正横以前,除已断定不存在碰撞危险外, 船舶应当: Ⅰ、将航速减到能维持其航向的小速度 Ⅱ、减速 Ⅲ、必要时停车、倒 车、把船停住
A.
Ⅰ、Ⅲ
B.
Ⅰ、Ⅱ、Ⅲ
C.
Ⅱ、Ⅲ
D.
Ⅰ、Ⅱ
【单选题】当一船听到他船的雾号显示在本船正横以前,除已断定不存在碰撞危险外,船舶应当()
A.
将航速减到能维持其航向的最小速度
B.
立即停车、倒车、把船拉住
C.
A、B都对
D.
A、B都不对
【单选题】What does the man mean?
A.
He has proved to be a better reader than the woman.
B.
He has difficulty understanding the book.
C.
He cannot get access to the assigned book.
D.
He cannot finish his assignment before the deadline.
【单选题】He cannot finish his assignment before the( ).
A.
diver
B.
deadline
C.
develop
D.
dorm
【简答题】A.He cannot finish his assignment before the deadline. B.He cannot get access to the assigned book. C.He has difficulty understanding the book. D.He has proved to be a better reader than the woman.
【判断题】发生停水事故时,自己应该处理,不用向上级汇报。
A.
正确
B.
错误
【单选题】评估社区居民的健康行为指标是
A.
吸烟率
B.
急性发病率
C.
交通事故发生率
D.
传染病发病率
E.
酒精中毒者
【单选题】Directions: Watch the video clip. Then choose the best answer to each of the following questions. Why does the student come to see the teacher?
A.
Because he was asked to see the teacher.
B.
Because he has difficulty in writing his essay.
C.
Because he cannot finish his project.
D.
Because he has problems with his school life.
【单选题】膝关节可绕额状轴,在矢状面内完成( )运动,其运动方向与上肢关节相反。
A.
屈伸
B.
收展
C.
回旋
D.
水平屈伸
【简答题】A. A) He has proved to be a better reader than the woman. B. B) He has difficulty understanding the book. C. C) He cannot get access to the assigned book. D. D) He cannot finish his assignment before ...
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