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【单选题】
已知 是某一微分方程的解,则 朗斯基行列式等于 ( )A.
3
B.
2
C.
1
D.
0
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The operator presses the “start” pushbutton, the “stop” pushbutton will disconnect. When he presses the “stop” pushbutton, the “start” pushbutton will disconnect.
A.
手动控制 / 点动控制 hand-pressing control
B.
连续控制 continuous control
C.
行程控制 travel control
D.
多地点控制 multiple-spot control
E.
互锁控制 mutual-lock control
F.
联锁控制 inter-lock control
【简答题】纵向比较是 把自己目前投入的努力与日前所获得报偿的比值,同自已过去投入的努力与过去所获报偿的比值进行比较。只有( )时他才认为公平
【单选题】What happens if the take over pushbutton of one side stick is pressed in for more than 40 seconds?
A.
- The other side stick remains deactivated after the take over pushbutton is released.
B.
- The other side stick remains activated after the take over pushbutton is released.
C.
- Both side sticks are deactivated.
【判断题】Circle behaviors you think are inappropriate for the workplace. 1. Arriving to work 15minutes late.( )
A.
正确
B.
错误
【简答题】预定 n. r_____________
【单选题】Your sales methods will depend______the customers with whom you deal.
A.
with
B.
on
C.
in
D.
for
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