皮皮学，免费搜题
登录
搜题
【单选题】
选择题1: 集成时基电路又称为集成定时器或555电路,是一种数字、模拟混合型的中规模集成电路,应用十分广泛,它是一种产生时间延迟和多种脉冲信号的电路,由于内部电压标准使用了几个5K电阻,故取名555电路。A.
1。
B.
2。
C.
3。
D.
4。
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
【简答题】There is no sense/point in doing sth.
【单选题】There is no sense in ________ important decisions to inexperience people.
A.
owing
B.
leaving
C.
sending
【简答题】influence, protest against, track down, act on, ring out, leave...to, in turn, make for, in existence, depress 1. Shouts of protest _______ from the angry crowd. 2. At the first light of dawn the wors...
【简答题】There is no sense in ____important decisions ____inexperienced people.
【单选题】There is no sense in ________ important decisions ________ inexperienced people.
A.
leaving … to
B.
leave … to
C.
left … to
D.
being left … to
相关题目：