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【简答题】
在通信设备之间的数据传输要遵循相应的传输协议,根据传输协议不同常见的 通信接口有RS232、RS485、SPI、IIC、USB,如果设备的通信接口不同,它们之间要通信必须通过接口转换器连接,如RS232/USB转换器、____都是在不同通信设备之间进行连接时常用的转换器。
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【简答题】When did Mark Twain move to Hannibal?
【单选题】--Mark broke his leg when he was playing football.--was that?
A.
Since when
B.
Since when ago
C.
How long
D.
How long ago
【简答题】Mark Twain got married when he was ______ years old.
【简答题】油菜的施肥原则足施足基肥,平施 苗 肥、 _________ 、 _________ 和 _________ 。
【单选题】How was the Project received when Mark first sent his invitation?
A.
Mark received responses from 53 schools.
B.
There were about 1,500 bags decorated with one announcement.
C.
It was a huge success, which, to a great extent, was due to the power of the Internet.
D.
R was a hit among the schools but the local supermarket was quite reluctant to offer their bags at first.
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