皮皮学,免费搜题
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【单选题】
PLC () 阶段读入输入信号,将按钮、开关触点、传感器等输入信号读入到存储器内 , 读入的信号一直保持 到下一次信号再次被读入时为止 , 即经过一个扫描周期
A.
输出采样
B.
输入采样
C.
程序执行
D.
输出刷新
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举一反三
【单选题】___类试图找到一个能够连接到URL中指定的数据库驱动程序。
A.
DriverManager
B.
Connection
C.
PreparedStatement
D.
CalledStatement
【单选题】听力原文:W: Hi, Don. Would you like to go swimming this afternoon? M: I wish I could, Jenny, but I have to spend the rest of the day in the library. I have a ten-page paper due tomorrow. W: Oh, is that fo...
A.
Go to a math class.
B.
Go to the lab.
C.
Go swimming.
【单选题】It provides us with food and also with antibiotics, and its function in storing 20 .................... has a significant effect on the climate. Q20的空前词storing 在原文的同义替换是什么?
A.
building
B.
hold
C.
store
D.
decomposing
【单选题】通过炮制可改变或缓和药物的性味,以下药物的炮制哪些符合此目的( )
A.
甘草、地黄
B.
黄连、黄芩
C.
苦杏仁、甘草
D.
地黄、党参
【单选题】听力原文:W: Hi, Don. Would you like to go swimming this afternoon? M: I wish I could, Jenny, but I have to spend the rest of the day in the library. I have a ten-page paper due tomorrow. W: Oh, is that fo...
A.
Go to a maths class.
B.
Go to the lab.
C.
Go swimming.
【单选题】同相比例运算电路中负反馈的类型是
A.
电压串联负反馈
B.
电压并联负反馈
C.
电流并联负反馈
D.
电流串联负反馈
【单选题】干扰细胞内纺缍体形成的药物是
A.
环磷酰胺
B.
羟基脲
C.
氟脲嘧啶
D.
长春新碱
E.
三苯氧胺
【单选题】在儒家思想中,道德和政治的关系是( )。
A.
道德是政治的基础
B.
政治是道德的基础
【单选题】只争朝夕,不负韶华 新年前夕,国家主席习近平发表了 2020 年新年贺词。贺词指出, 2020 年是具有里程碑意义的一年。我们将全面建成小康社会,实现第一个百年奋斗目标。 President Xi Jinping on Tuesday delivered a New Year speech in Beijing to ring in 2020, pledging to achieve the fi...
A.
gain the morning and live up to the youth
B.
seize the day and live it to the fullest
【单选题】(4-2)( ) 类试图找到一个能够连接到 URL 中指定的数据库驱动程序
A.
DriverManager
B.
 Connection
C.
PreparedStatement
D.
 CalledStatement
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