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搜题
【单选题】
已知某线性移不变离散系统的单位冲激响应为 ,则该系统是______。
A.
非因果、不稳定系统
B.
因果、稳定系统
C.
非因果、稳定系统
D.
因果、不稳定系统
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【判断题】脱轨是指机车、车辆、动车、重型轨道车（包括拖车）的车轮落下轨面（包括脱轨后又自行复轨）。
A.
正确
B.
错误
查看完整题目与答案
【判断题】机车、车辆、动车、重型轨道车（包括拖车）的车轮落下轨面（包括脱轨后又自行复轨）的就是脱轨事故。
A.
正确
B.
错误
查看完整题目与答案
【判断题】脱轨：系指机车车辆的车轮落下轨面(包括脱轨后又自行复轨)，或车轮轮缘顶部高于轨面。
A.
正确
B.
错误
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【简答题】按照自然花期分类，菊花可以分成哪几类？
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【判断题】脱轨指机车车辆的车轮落下轨面（包括脱轨后又自行复轨），或车轮轮缘顶部高于轨面（因作业需要的除外）。
A.
正确
B.
错误
查看完整题目与答案
【多选题】Please read the following sentences and tick the functions of a cover letter according to your understanding.
A.
A cover letter introduces you and your resume to an employer.
B.
A cover letter is as important as a resume.
C.
A cover letter demonstrates your writing skills.
D.
A cover letter can be sent to all employers.
E.
A cover letter gives factual information and details about your career so far.
查看完整题目与答案
【简答题】You may open your electronic mail and find information about how to buy medicine, cheap airline tickets, books and, of course, computers and computer products．There may also be offers for investment d...
查看完整题目与答案
【单选题】“脱轨”系指机车、车辆、( )的车轮落下轨面(包括脱轨之后又自行复轨)。
A.
动车、拖车
B.
轻型车辆
C.
小车
D.
动车、重型轨道车(包括拖车)
查看完整题目与答案
【单选题】Reading the following passage and tick your answer 1 . what does Buy Nothing Day mean?
A.
It's a special day when people are encouraged not to buy anything.
B.
On that day, shops are all closed , so you can't buy anything.
C.
On that day, shops are soo crowded that you can't get what you want.
查看完整题目与答案
【单选题】切花菊按照花期的不同可以分为春菊、夏菊、秋菊和寒菊,其中品种最多的是( )。
A.
春菊
B.
夏菊
C.
秋菊
D.
寒菊
查看完整题目与答案
相关题目：
【判断题】脱轨是指机车、车辆、动车、重型轨道车（包括拖车）的车轮落下轨面（包括脱轨后又自行复轨）。
A.
正确
B.
错误
查看完整题目与答案
【判断题】机车、车辆、动车、重型轨道车（包括拖车）的车轮落下轨面（包括脱轨后又自行复轨）的就是脱轨事故。
A.
正确
B.
错误
查看完整题目与答案
【判断题】脱轨：系指机车车辆的车轮落下轨面(包括脱轨后又自行复轨)，或车轮轮缘顶部高于轨面。
A.
正确
B.
错误
查看完整题目与答案
【简答题】按照自然花期分类，菊花可以分成哪几类？
查看完整题目与答案
【判断题】脱轨指机车车辆的车轮落下轨面（包括脱轨后又自行复轨），或车轮轮缘顶部高于轨面（因作业需要的除外）。
A.
正确
B.
错误
查看完整题目与答案
【多选题】Please read the following sentences and tick the functions of a cover letter according to your understanding.
A.
A cover letter introduces you and your resume to an employer.
B.
A cover letter is as important as a resume.
C.
A cover letter demonstrates your writing skills.
D.
A cover letter can be sent to all employers.
E.
A cover letter gives factual information and details about your career so far.
查看完整题目与答案
【简答题】You may open your electronic mail and find information about how to buy medicine, cheap airline tickets, books and, of course, computers and computer products．There may also be offers for investment d...
查看完整题目与答案
【单选题】“脱轨”系指机车、车辆、( )的车轮落下轨面(包括脱轨之后又自行复轨)。
A.
动车、拖车
B.
轻型车辆
C.
小车
D.
动车、重型轨道车(包括拖车)
查看完整题目与答案
【单选题】Reading the following passage and tick your answer 1 . what does Buy Nothing Day mean?
A.
It's a special day when people are encouraged not to buy anything.
B.
On that day, shops are all closed , so you can't buy anything.
C.
On that day, shops are soo crowded that you can't get what you want.
查看完整题目与答案
【单选题】切花菊按照花期的不同可以分为春菊、夏菊、秋菊和寒菊,其中品种最多的是( )。
A.
春菊
B.
夏菊
C.
秋菊
D.
寒菊
查看完整题目与答案