题目

Among the reporters        first work about college students’ life sells pretty well．He’s busy talking with them． A．does Tom stand whose                                                                B．Tom stands whose C．stands Tom whose                                      D．stood Tom whose如图所示：医院抢救病人采用了此装置，下列说法不正确的为（　　）A．a导管连接供给氧气的钢瓶B．b导管连接供氧给病人的软管C．此装置可以观察输出氧气的速率D．此装置叫排水法收集氧气，同时证明氧气不易溶与水