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【单选题】
由555定时器组成的多谐振荡器,欲使振荡频率增高,则可( )。A.
减小C
B.
增大 R 1 、 R 2
C.
增大 U DD
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皮皮学刷刷变学霸
举一反三
【简答题】Devine ( ) on se moque.
【单选题】The robot is working on the_______(圆柱形的) workpiece.
A.
cylindrical
B.
cylindrical
C.
round
D.
square
【简答题】用合适的关系词补全下面短文。 Robots are becoming more and more common amongst humans. Robots like Pepper have started working as assistants on the reception desk in Belgian hospitals 1. ________ are located in Lieg...
【单选题】{In some science fiction movies,evil(邪恶)robots refuse to die,no matter how hard people fight back. Now science fiction has become science fact.For the first time,scientists have made a robot that can ...
A.
Do homework for human.
B.
Tell people when it is.
C.
They have no computers inside.
D.
keep working after being damaged
【单选题】听力原文：(A) The man is the host of the show. (B) The robot wears a suit. (C) The robot is working on a machine. (D) They make the same pose.
A.
B.
C.
D.
【简答题】阅读理解(一) “Police remind you to scan the QR codes and register ( 登记 ) your information for quick passage. Thank you for your cooperation,” said Huang Tiantian, a robot working at an expressway exit stat...
【单选题】The robot is working on the _______ workpiece.
A.
cylindrically
B.
cylinders
C.
cylinder
D.
cylindrical
【简答题】Robots The latest models can do a large 1 of different things. They can even recognise their owner’s face. Furby is 2 robot toy. It has working ears, eyes and mouth and 3 attention all day but sleeps ...
【单选题】用反证法证明命题“如果a＞b，那么a 3 ＞b 3 “时，下列假设正确的是（ ）
A.
a 3 ＜b 3
B.
a 3 ＜b 3 或a 3 =b 3
C.
a 3 ＜b 3 且a 3 =b 3
D.
a 3 ＞b 3
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