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【判断题】
2信号f(k)和y(k)是周期信号，其和f(k)+ y(k)是周期的。（ ）
A.
正确
B.
错误
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参考答案：
举一反三
【单选题】有关子宫肌瘤，下述哪项是错的：
A.
子宫体部肌瘤比较少见
B.
多发性肌瘤多见
C.
子宫肌瘤易发生月经过多
D.
子宫肌瘤发生变性率低
E.
绝经后肌瘤一般不再长大
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【单选题】定时限过流保护动作时限级差一般为( ) 。
A.
0.5秒
B.
0.7秒
C.
0.9秒
D.
3秒
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【单选题】反时限过电流保护动作时限的整定时,为满足选择性的要求,前后两级保护装置的动作时限级差△t一般取多少秒?
A.
0.7s
B.
0.5s
C.
1s
D.
没有规定值
查看完整题目与答案
【单选题】定时限过流保护动作时限的级差一般为( ) 。
A.
0.5s
B.
O.7s
C.
l.5s
D.
3s
查看完整题目与答案
【简答题】Complete the following with every, each, everyone, every one or all. The village where my sister lives is so small that she knows and knows her. I have several dreams last night was funnier than the l...
查看完整题目与答案
【单选题】定时限过电流保护动作时限的整定时,为满足选择性的要求,前后两级保护装置的动作时限级差△t一般取多少秒?
A.
0.7s
B.
0.5s
C.
1s
D.
没有规定值
查看完整题目与答案
【简答题】用所给词的正确形式填空。 Gold is ___(little) useful than iron. My sister is two years ___(old) than I. Mary's parents have three daughters, and she is the ___(young)child. The ___(cheap) bags are not usually the ...
查看完整题目与答案
【单选题】定时限过流保护动作时限的级差一般为（）。
A.
0.5s
B.
0.7s
C.
1.5s
D.
3s
查看完整题目与答案
【单选题】The boy is _______ my sister, so he sits in front of her.
A.
as tall as
B.
taller than
C.
not as tall as
D.
the tallest
查看完整题目与答案
【单选题】My sister is three years ______than I. She is _______young _____go to school.
A.
young; too; to
B.
younger; enough; to
C.
younger; too ;to
D.
young; so; that
查看完整题目与答案
相关题目：
【单选题】有关子宫肌瘤，下述哪项是错的：
A.
子宫体部肌瘤比较少见
B.
多发性肌瘤多见
C.
子宫肌瘤易发生月经过多
D.
子宫肌瘤发生变性率低
E.
绝经后肌瘤一般不再长大
查看完整题目与答案
【单选题】定时限过流保护动作时限级差一般为( ) 。
A.
0.5秒
B.
0.7秒
C.
0.9秒
D.
3秒
查看完整题目与答案
【单选题】反时限过电流保护动作时限的整定时,为满足选择性的要求,前后两级保护装置的动作时限级差△t一般取多少秒?
A.
0.7s
B.
0.5s
C.
1s
D.
没有规定值
查看完整题目与答案
【单选题】定时限过流保护动作时限的级差一般为( ) 。
A.
0.5s
B.
O.7s
C.
l.5s
D.
3s
查看完整题目与答案
【简答题】Complete the following with every, each, everyone, every one or all. The village where my sister lives is so small that she knows and knows her. I have several dreams last night was funnier than the l...
查看完整题目与答案
【单选题】定时限过电流保护动作时限的整定时,为满足选择性的要求,前后两级保护装置的动作时限级差△t一般取多少秒?
A.
0.7s
B.
0.5s
C.
1s
D.
没有规定值
查看完整题目与答案
【简答题】用所给词的正确形式填空。 Gold is ___(little) useful than iron. My sister is two years ___(old) than I. Mary's parents have three daughters, and she is the ___(young)child. The ___(cheap) bags are not usually the ...
查看完整题目与答案
【单选题】定时限过流保护动作时限的级差一般为（）。
A.
0.5s
B.
0.7s
C.
1.5s
D.
3s
查看完整题目与答案
【单选题】The boy is _______ my sister, so he sits in front of her.
A.
as tall as
B.
taller than
C.
not as tall as
D.
the tallest
查看完整题目与答案
【单选题】My sister is three years ______than I. She is _______young _____go to school.
A.
young; too; to
B.
younger; enough; to
C.
younger; too ;to
D.
young; so; that
查看完整题目与答案
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