In order not to interfere with the plane's navigation, you should__. A. fasten the seat belt B. turn off all electronic devices C. open the window shade. 查看完整题目与答案 用中规模加法计数器74LS161构成的电路如图所示,若要构成65进制计数器,则预置数D7~D0为 。 A. 1...
You are not supposed to shake hands. = You shouldn’t shake hands.你不应与之握手。 “Henry, you ___ tell the teacher if you want to go out of the classroom.”“Sorry, sir.” A. are supposed to B. are surprised to C. are afraid to 8. You are ___to type quickly when talking...