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【单选题】
有一连续信号【图片】，用采样间隔 T=0.02s对【图片】进行采样，则采样所得到的离散信号【图片】的周期为（ ）。A.
20
B.
C.
5
D.
不是周期的
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】对文件夹重命名 , 下面哪种方法是错误的?
A.
双击文件夹名称的文字，输入文字后，点击空白地方即可。
B.
选择文件夹直接输入文件夹的新名称。
C.
选择文件夹【右击】选择【重命名】，输入文字后，点击空白地方即可。
D.
选择文件夹后，按【 F2 】，输入文字后，点击空白地方即可。
【单选题】普通型人寿保险按保险事故划分，可分为( )。
A.
生存保险、健康保险、意外伤害保险
B.
简易人寿保险、终身寿险、健康保险
C.
死亡保险、生存保险、两全保险
D.
两全保险、残疾保险、年金保险
【单选题】Who is required to adhere to this new timetable?
A.
Some members
B.
All members
C.
The offcie manager only
D.
Those who aren't often punctual
【单选题】We all hope he can be _____ to this new job.
A.
enough
B.
adequate
C.
ample
D.
sufficient
【简答题】kinematic structure
【简答题】kinematic structure________________(翻译)
【单选题】If a link is fixed in a kinematic chain, the chain becomes a .
A.
structure
B.
mechanism
C.
machine
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【简答题】Hello class, To begin with, I’d like to congratulate all of you on 1) to this new phase in your journey to learn English as a foreign language. I really 2) . Behind this laudable step ahead for sure y...
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