• 2022-06-15
    ‍Humour is their “________”. They do not have to switch it on deliberately, and they cannot switch it off.‍
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      I ______ (switch off) the air conditioner, already.

    • 1

      Both sides of the  switch should be placed in the OFF position before turning the MASTER switch ON or OFF, starting the engine, or applying an external power sources. A: AVIONICS B: master C: TEST

    • 2

      Always ______ your computer when you've finished. A: switch off B: put off C: take off D: send off

    • 3

      Your phone need to be during meeting! ( ). A: open B: turn off C: close D: switch off

    • 4

      简述if、if……else、switch、for、do……while语句的作用