nhịp tim của một người là 60 lần/phút . căn cứ vào chu kì chuẩn ở người ,hãy tính thời gian của các pha trong một chu kì tim. Khi bị ốm ,tim người này đập nhanh hơnn (95 lần/phút). Tính thời gian của các pha . nếu tình trạng này kéo dài lâu thì có ảnh hưởng gì tới tim ko ? giải thích.

Các câu hỏi liên quan

III. Put the correct form of the verbs with present simple or present progressive tense 1, ......... you usually ......... (go) away for Christmas or ..... you ...... (stay) at home ? 2, She ......... (hold) some roses . They ............ (smell) lovely 3, Oh no ! Look ! It .......... (snow) again . It always ........ (snow) in this country 4, Mary ....... (swim) very well , but she ........... ( not run ) very fast 5, ....... you ...... (enjoy) this party ? Yes , I ....... ( have) a great time ! 6, Sorry I can't help you . I .............(not know) where she keeps her files 7, What ....... you ...... (do) nest Saturday ?> Nothing special . I .......... (stay) at home 8, I ..........(think) your new hat ........(look) nice on you 9, I ....... (live) with my parents but right now I ...........(stay) with some friends for a few days 10, I can't talk on the phone now . I ............(drive)home 11, Where are the children ? They .......... (lie) on the beach over there 12, You never ...........(listen) to a word I say ! You ......... always .......... (listen) to that mp3 player! 13, Tim (live) ................ in Manchester but he (spend) .................. this month in Wales 14, Everyday, my father (get up) ............ at 5.00 a.m , but today , he (get up )....... at 6.00 am 15, Every morning , I ( watch ) ............. TV at 10.00, but today I (listen) ............. to music at 10.00 16, A: ..........................(you/work) today? B: She (be) ...... a teacher but she ( not teach) ................ at the moment . Sge (look) ................ for a job 17, Now I (do) .............. the cooking while Hoa (listen) ............... to music 18, .............. You (live) .......... near a market? .... It (be) ............... noisy? Giúp mk vs mn đang cần gấp ạ