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【单选题】
已知描述系统的微分方程为 , 其中f(t) 是输入信号,y(t) 是输出信号,则该系统是 ( ) 。
A.
非 线性时变因果系统
B.
非 线性时不变因果系统
C.
线性时变因果系统
D.
线性时不变非因果系统
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参考答案：
举一反三
【单选题】老师对学生上课迟到很生气,就把那些迟到的 学生关在了门外。
A.
The teacher felt so angry on the students for being late that he/she shut them out.
B.
The teacher felt too angry with the students for be late that he/she shut them out.
C.
The teacher felt so angry with the students for being late that he/she shut them out.
D.
The teacher felt too angry with the students for being late that he/she shut them outs ide.
查看完整题目与答案
【简答题】老师对学生上课迟到很生气,就把那些迟到的 学生关在了门外。 (shut out)
查看完整题目与答案
【单选题】下列关于清创术原则的说法哪项是错误的（　）
A.
清创缝合术应争取在伤后6～8小时内进行
B.
在有效抗生素应用的前提下，可根据伤口污染情况，适当延长至伤后24～48小时
C.
一般超过12小时或污染严重者，均应按感染伤口处理或仅清创而暂不予缝合，待3～4天后伤口无明显感染，再行延期缝合
D.
头皮、面颊部伤口血运丰富，即使超过24小时仍可考虑缝合
E.
彻底止血
查看完整题目与答案
【简答题】汉翻英 老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。(shut out) 小男孩伸出一只手去那桌子上的书。(reach for) 你们不应该在上班时间玩电脑游戏。(at work) 经理亲自出马参加面试。(in person) He listened quietly and gave good, clear-eyed advice about letting go. With just...
查看完整题目与答案
【判断题】围岩压力很大的单线、双线和多线隧道拱圈，应达到设计强度的90％可拆模。
A.
正确
B.
错误
查看完整题目与答案
【判断题】老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。The teacher felt so angry with the students for being later that he threw them out of the door.
A.
正确
B.
错误
查看完整题目与答案
【判断题】投标预备会一般在现场踏勘之后的5天内举行.
A.
正确
B.
错误
查看完整题目与答案
【单选题】投标预备会一般在现场踏勘之后的()天内举行。
A.
1-2
B.
2-3
C.
3-5
D.
7
查看完整题目与答案
【单选题】老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。
A.
The teacher felt so angry with the students for being late that he/she shut them out.
B.
The teacher felt so angry about the students for being late that he/she shut them out.
C.
The teacher felt so angry with the students that he/she shut them out.
D.
The teacher felt so angry about the students that he/she shut them out.
查看完整题目与答案
【判断题】The teacher felt so angry with the student for being late that he shut them off.老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】老师对学生上课迟到很生气,就把那些迟到的 学生关在了门外。
A.
The teacher felt so angry on the students for being late that he/she shut them out.
B.
The teacher felt too angry with the students for be late that he/she shut them out.
C.
The teacher felt so angry with the students for being late that he/she shut them out.
D.
The teacher felt too angry with the students for being late that he/she shut them outs ide.
查看完整题目与答案
【简答题】老师对学生上课迟到很生气,就把那些迟到的 学生关在了门外。 (shut out)
查看完整题目与答案
【单选题】下列关于清创术原则的说法哪项是错误的（　）
A.
清创缝合术应争取在伤后6～8小时内进行
B.
在有效抗生素应用的前提下，可根据伤口污染情况，适当延长至伤后24～48小时
C.
一般超过12小时或污染严重者，均应按感染伤口处理或仅清创而暂不予缝合，待3～4天后伤口无明显感染，再行延期缝合
D.
头皮、面颊部伤口血运丰富，即使超过24小时仍可考虑缝合
E.
彻底止血
查看完整题目与答案
【简答题】汉翻英 老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。(shut out) 小男孩伸出一只手去那桌子上的书。(reach for) 你们不应该在上班时间玩电脑游戏。(at work) 经理亲自出马参加面试。(in person) He listened quietly and gave good, clear-eyed advice about letting go. With just...
查看完整题目与答案
【判断题】围岩压力很大的单线、双线和多线隧道拱圈，应达到设计强度的90％可拆模。
A.
正确
B.
错误
查看完整题目与答案
【判断题】老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。The teacher felt so angry with the students for being later that he threw them out of the door.
A.
正确
B.
错误
查看完整题目与答案
【判断题】投标预备会一般在现场踏勘之后的5天内举行.
A.
正确
B.
错误
查看完整题目与答案
【单选题】投标预备会一般在现场踏勘之后的()天内举行。
A.
1-2
B.
2-3
C.
3-5
D.
7
查看完整题目与答案
【单选题】老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。
A.
The teacher felt so angry with the students for being late that he/she shut them out.
B.
The teacher felt so angry about the students for being late that he/she shut them out.
C.
The teacher felt so angry with the students that he/she shut them out.
D.
The teacher felt so angry about the students that he/she shut them out.
查看完整题目与答案
【判断题】The teacher felt so angry with the student for being late that he shut them off.老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。
A.
正确
B.
错误
查看完整题目与答案
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