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【多选题】
充电站直流系统的“三遥”功能指哪些?
A.
遥测
B.
遥信
C.
遥控
D.
遥感
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皮皮学刷刷变学霸
举一反三
【多选题】下面哪些描述是正确的:
A.
对于非自衡过程,其数学模型必含积分环节;
B.
对于单容自衡过程;其数学模型可以通过一个一阶惯性环节描述;
C.
对于多容过程,其传递函数可以通过将每个容积过程所对应的环节传递函数相乘来描述;
D.
多容自衡过程的响应速度可通过增大其容量系数的方法来提高。
【单选题】听力原文:W: Excuse me, where is the nearest supermarket? M: Go along this road and then turn right at the first crossing. You'll find it on your right. W: Thanks a lot. M: You're welcome. Q: Where does th...
A.
The bank.
B.
The hospital.
C.
The supermarket.
【单选题】听力原文:(W = Bank clerk M = Man) W: Excuse me, sir, is there a problem? M: WelI, yes, I don't really understand it. When I put my card in, the machine ate it. W: Ate it ? You mean it didn' t give it back...
A.
Library
B.
Shop
C.
Bank
D.
Supermarket
【单选题】听力原文:M: Come in! W: Er, excuse me, professor Serafin, are you busy? M: No, Miss Van Pelt, I've always got time for you. There're several things I want to talk to you about. W: Oh, really? M: Yes, er, ...
A.
Homework.
B.
Seminar presentation.
C.
Health.
D.
Class attendance.
【单选题】下面哪些描述是正确的
A.
钳子很有用是因为它们能够夹住所有规格的螺栓
B.
割钳可用于切断经硬化处理的线材
C.
可调铰接式钳子可用于夹住大物件
D.
卡环钳子用于切断卡环
【单选题】听力原文:M: Excuse me, Madam. W: Yes? M: How can I get to the Chaoyang Park? W: Take the bus No. 331 to the final stop. M: It's very kind of you. W: My pleasure. What is the relationship between the speak...
A.
They are friends.
B.
They are strangers.
C.
They are brother and sister.
【多选题】下面哪些描述是正确的
A.
反映总体数据的离散程度
B.
反映样本数据的离散程度
C.
样本均值离散程度测度的估计值
D.
S 反映样本数据的离散程度
【单选题】船底塞的正确使用方法是:
A.
从舱内向外塞
B.
从船底外面向里塞
C.
船底内外均可塞
D.
船出坞后堵塞
【判断题】温度的变化是通过滞回比较器的输出来改变三极管的工作状态从而切换继电器的接通位置。
A.
正确
B.
错误
【多选题】下面哪些描述是正确的
A.
交换机动态维护着一张MAC地址表
B.
一台路由器可以有多个IP地址
C.
路由器可以维护路由表和MAC地址表
D.
路由器可以连接两个不同的网段
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