皮皮学,免费搜题
登录
搜题
【单选题】
正弦电压 u( t)=50sin(314 t +60 o )V, 则该正弦电压的周期 T 为 。
A.
314秒
B.
50秒
C.
0.02秒
D.
1/314秒
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】After a short time, the bad news had ______all over the city and everybody knew it.
A.
showed
B.
spread
C.
covered
D.
Explored
查看完整题目与答案
【单选题】时间继电器( )带有瞬时动作触点
A.
可以
B.
不可以
C.
通电延时可以,而断电延时不可以
D.
无定论
查看完整题目与答案
【判断题】时间继电器不允许带有瞬时动作的触点。
A.
正确
B.
错误
查看完整题目与答案
【简答题】It’s eight thirty by my watch now. ( 就划线部分提问 ) __________ _________ is it by your watch now?
查看完整题目与答案
【单选题】It was such a tiny village that____ knew _____else well.
A.
anybody; somebody
B.
everybody; everybody
C.
anybody; anybody
D.
nobody; nobody
查看完整题目与答案
【简答题】设a,b,c为平面内三条不同的直线,①若a∥b,l⊥a,则l与b的位置关系是( );②若l⊥a,l⊥b,则a与b的位置关系是( );③若a∥b,l∥a,则l与b的位置关系是( )。
查看完整题目与答案
【简答题】Everybody knew him or knew of him . (Para. 1 ) Everybody_______ or___________________.
查看完整题目与答案
【单选题】在查询设计器的工具栏中有,而在视图设计器中没有的工具按钮是____________。
A.
显示SQL窗口
B.
移去表
C.
查询去向
D.
添加联接
查看完整题目与答案
【单选题】Everybody in the village knew him, so we had ____ his house.
A.
no difficulty to find
B.
some difficulty finding
C.
so difficulty to find
D.
no difficulty in finding
查看完整题目与答案
【简答题】Allan Paul, a final year engineering student, was considered as a safe driver by all who knew him. One sunny morning, Allan was on his way home from his friend’s house on his favorite bike. All of a s...
查看完整题目与答案
相关题目:
【单选题】After a short time, the bad news had ______all over the city and everybody knew it.
A.
showed
B.
spread
C.
covered
D.
Explored
查看完整题目与答案
【单选题】时间继电器( )带有瞬时动作触点
A.
可以
B.
不可以
C.
通电延时可以,而断电延时不可以
D.
无定论
查看完整题目与答案
【判断题】时间继电器不允许带有瞬时动作的触点。
A.
正确
B.
错误
查看完整题目与答案
【简答题】It’s eight thirty by my watch now. ( 就划线部分提问 ) __________ _________ is it by your watch now?
查看完整题目与答案
【单选题】It was such a tiny village that____ knew _____else well.
A.
anybody; somebody
B.
everybody; everybody
C.
anybody; anybody
D.
nobody; nobody
查看完整题目与答案
【简答题】设a,b,c为平面内三条不同的直线,①若a∥b,l⊥a,则l与b的位置关系是( );②若l⊥a,l⊥b,则a与b的位置关系是( );③若a∥b,l∥a,则l与b的位置关系是( )。
查看完整题目与答案
【简答题】Everybody knew him or knew of him . (Para. 1 ) Everybody_______ or___________________.
查看完整题目与答案
【单选题】在查询设计器的工具栏中有,而在视图设计器中没有的工具按钮是____________。
A.
显示SQL窗口
B.
移去表
C.
查询去向
D.
添加联接
查看完整题目与答案
【单选题】Everybody in the village knew him, so we had ____ his house.
A.
no difficulty to find
B.
some difficulty finding
C.
so difficulty to find
D.
no difficulty in finding
查看完整题目与答案
【简答题】Allan Paul, a final year engineering student, was considered as a safe driver by all who knew him. One sunny morning, Allan was on his way home from his friend’s house on his favorite bike. All of a s...
查看完整题目与答案