皮皮学，免费搜题
登录
搜题
【简答题】
石英晶体振荡器的原理电路如下图所示，图中微调电容C与石英晶体相串联，其作用是调整石英晶体支路的谐振频率与LC并联谐振电路的谐振频率相一致，试解答： (1)石英晶体工作在何种谐振状态？ (2)该电路是一种什么类型的振荡电路？
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】The research conducted hy Porter and Landfield shows that
【简答题】In 1955, a man named Raymond Kroc together with two brothers named McDonald opened a popular restaurant in California which sold food that was easy to prepare and serve quickly. Hamburgers, French fri...
【简答题】It is a blow for the Ugly Bettys and Plain Janes ——research shows that good looks lead to better pay. A study of 4,000 young men and women found that beauty boosted pay checks more than intelce. ...
【单选题】听力原文： New studies say that eating chocolate may be good for your heart. Research shows that eating chocolate may reduce the chance of developing heart disease by helping blood vessels remain clear and...
A.
Eating chocolate might help you lose weight.
B.
Eating chocolate might help you develop heart attacks.
C.
Eating chocolate is a bad option for fat people.
D.
Eating chocolate may help you prevent heart disease.
【单选题】听力原文： New research from Australia shows that pets are good for your health. The findings of this new study suggest that people who have pets are at less risk from heart disease than those who do not. ...
A.
Pets manage to make their owners more healthy.
B.
Pets spread many kinds of disease to men.
C.
Pet owners enjoy better health because of exercises.
D.
Pets can sometimes cause high blood pressure in man.
【简答题】The research conducted by Porter and Landfield shows that
【简答题】Did you know it takes 21 days to form a good habit? Research shows that when you “stick to something” for three weeks you are more likely to reach your goals. This is important for language learners o...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
