（ ）指令可用来等待数字输出信号为 0。 A: wait(D_OUT[11], ON) B: wait(D_IN[11], ON) C: wait(D_OUT[11], OFF) D: wait(D_IN[11],OFF)

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

【单选题】3 . Aron ______ water five days later. A . ran out B . used out C . ran out of D . used out of A. A ． ran out B. B ． used out C. C ． ran out of D. D ． used out of

Howabout_______for a walk? A: go out B: went out C: going out D: will go out

The bookhis experience in India. A: came out in B: came out of C: came out at D: came out with

I’d like to have these documents _______ in a minute. A: sorting out B: sorted out C: to be sorted out D: sort out

I'd like to ______ the whole week in advance. A: map out B: plan out C: carry out D: set out

There was a power cut and all the lights _____. A: went out B: go out C: died out D: made out

I learned to ______the background noise. A: let out B: get out C: leave out D: tune out

The stars ____ as soon as it was dark. A: come out B: came out C: have come out D: will come out