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【单选题】
多级直接耦合放大电路中,( )的零漂占主要地位。A.
第一级
B.
中间级
C.
输出级
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反馈参考答案：
举一反三
【单选题】What must the coach change?
A.
his hairstyle
B.
his coaching style
C.
his fashion style
D.
his fighting style
【简答题】合金钢按用途分为 、 和 三种
【简答题】完形填空。 A parable(寓言)tells about a martial artist who kneels (跪) before a in a ceremony to receive the Black Belt, which is hard to earn. After years of 1 , the student has finally reached a heig...
【单选题】What does the man imply about people who play sports in the gym?
A.
They do not need an instructor to coach them.
B.
They do not usually take swimming classes.
C.
They must pay an extra fee to use the equipment.
D.
They do not need a gym pass.
【简答题】狭义的无土栽培,也称经典无土栽培,是指使用水和化学肥料配制的( )为植物提供生长发育所必需的营养元素的无土栽培形式,因此这样栽培方式,在广义的无土栽培分类中,属于( )栽培。
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