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【简答题】
电磁感应式车速传感器,主要由永久磁铁和___,组成,车速传感器一般安装在变速器输出轴附近。
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举一反三
【单选题】Children need friends their own age to play with.
A.
of
B.
for
C.
in
D.
at
【单选题】阿司匹林与碳酸钠溶液共热,放冷后用稀硫酸酸化,析出的白色沉淀是
A.
依酰水杨酸
B.
醋酸
C.
水杨酸
D.
水杨酸钠
【简答题】Children need friends their own age to play with. A of B for C in D at
【简答题】Children of America are getting fatter every time. 13% of the children at the age of 6 to 11 are overweight(too fat). When we look at children’s lives today in the USA, we can see the root(origin)of t...
【简答题】Children of America are getting fatter every time. 13% of the children at the age of 6 to 11 are overweight(too fat). When we look at children's lives today in the USA, we can see the root(origin)of t...
【判断题】棘轮机构只能用在要求间歇运动的场合。
A.
正确
B.
错误
【简答题】Why should children be educated about the harm of smoking at an early age? [A] Because small children are more curious about cigarettes. [B] Because smoking is difficult to give up for children. [C] B...
【单选题】阿司匹林与碳酸钠溶液共热,放冷后用稀硫酸酸化,析出的白色沉淀是
A.
酰水杨酸
B.
醋酸
C.
水杨酸
D.
水杨酸钠
E.
苯甲酸
【单选题】The food was divided ______ according to the age and size of the children.
A.
equally
B.
proportionately
C.
sufficiently
D.
adequately
【单选题】阿司匹林与碳酸钠溶液共热,放冷后用稀硫酸酸化,析出的白色沉淀是
A.
乙酰水杨酸
B.
醋酸
C.
水杨酸
D.
水杨酸钠
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