下列程序输出脉冲信号的是（ ）
A: IF D_OUT[30]=ON THENCALL DENGEND IF
B: D_OUT[30]=ONSLEEP 100D_OUT[30]=OFF
C: WHILED_OUT[30]=ONSLEEP 100END WHILE
A: IF D_OUT[30]=ON THENCALL DENGEND IF
B: D_OUT[30]=ONSLEEP 100D_OUT[30]=OFF
C: WHILED_OUT[30]=ONSLEEP 100END WHILE
举一反三
- At 6:30 a.m. next morning the train ________Central Station, Glasgow. A: pulled into B: came down C: laid out D: sought out
- It’s said that the coal on the earth ______ in 100 years. A: is run out B: will be run out C: is come out D: will be come out
- At 7:30 , I’ll drive over to （ ）you（ ）.Please get ready at that time . A: pick … on B: pick …out C: pick …up D: pick …off
- It is polite to people when communicating. A: hear;off B: hear;out C: listen to;out D: listen to;off
- Don’t drive your car __________ a cliff! A: out B: out of C: off D: of