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皮皮学刷刷变学霸
举一反三
【单选题】同步发电机的欠压保护是通过 来实现的。
A.
负序继电器
B.
接触器
C.
自动空气开关的失压脱扣器
D.
自动空气开关的过流脱扣器
【单选题】We don’t only perceive the things. What else do we also perceive?
A.
time
B.
space
C.
direction
D.
all of the above
【判断题】We perceive the world with our five physical senses, which are smell, taste, sight, touch and sound.
A.
正确
B.
错误
【单选题】When we PERCEIVE the sounds of a word, do we PERCEIVE the phonemic form or the phonetic form?
A.
the phonemic form
B.
the phonetic form
【判断题】塑料包装材料的优点是物理性能、化学性能、光学性能好,质轻、易着色、可印刷、成本低。
A.
正确
B.
错误
【单选题】According to the passage we do not perceive gravity because ______.
A.
we live in a downward-pulling world
B.
there is no decrease or increase force of gravity on our bodies
C.
our senses provide accurate information about the location
D.
our brains integrate signals from all apparatus of the body
【判断题】离散型随机变量分布律应满足两个条件;(1) 随机变量取每个值的概率 非负; (2) 随机变量取每个值的概率之和为 1.
A.
正确
B.
错误
【单选题】We rarely perceive more than a minute ______ of the sights and sounds that fall upon our sense organs the great majority pass us by.
A.
fiction
B.
function
C.
fraction
D.
friction
【单选题】We perceive the world using all our senses, but we digest most digital data through tiny two-dimensional screens on mobile devices.
A.
break down food
B.
understand or assimilate
C.
arrange and integrate in the mind
D.
put up with something unpleasant
【简答题】We rarely perceive more than a minute ________ of the sights and sounds that fall upon our sense organs; the great majority pass us by. A) fiction B) function C) fraction D) friction
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