皮皮学,免费搜题
登录
搜题
【单选题】
运算放大器在下面的电路中工作在饱和区的是( )。
A.
有源滤波电路
B.
加法运算电路
C.
积分运算电路
D.
电压比较器
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】听力原文: Russian commandos have stormed a hijacked bus in the southern Tajikistan Republic and freed all 18 hostages aboard. Security officials say the two gunmen who had held the bus for 8 hours were ar...
A.
18.
B.
2.
C.
8.
D.
1.
【单选题】It is high time we ___ off.
A.
are
B.
were
C.
be
D.
will be
【单选题】It is high time we ______.
A.
leave
B.
left
C.
will leave
D.
have left
【单选题】It is high time we ______ this practice.
A.
stop
B.
stopped
C.
have stopped
D.
had stopped
【单选题】紫外-可见光谱法 检验 一氧化碳 中毒 检材 时, 氧合血红蛋白吸收峰分别 什么范围出现 ( )
A.
576.2 nm 和 542 nm
B.
538 nm
C.
568.2 nm 和538 nm
D.
555 nm
【简答题】It is high time we go home. A B C D ____________
【判断题】三相异步电动机在拆卸时,机座与前后端盖要分别作好标记,便于装配时状。
A.
正确
B.
错误
【单选题】It is high time we
A.
eave
B.
left
C.
will leave
D.
have left
【简答题】It is high time we ______ (start) to pay attention to such mistakes.
【单选题】____________________ is the first extant work on dramatic theory.
A.
The Republi ‍
B.
Mimesi ‍
C.
Poetics
D.
Dithyramb
相关题目: