A.21.5~22.5m/s
B.16.5~17.5m/s
C.14.5~15.5m/s
D.10~11m/s
[单选题]A.21.5~22.5m/sB.16.5~17.5m/sC.14.5~15.5m/sD.10~11m/s
[单选题]A.21.5~22.5m/sB.16.5~17.5m/sC.14.5~15.5m/sD.10~11m/s
[单选题]A.1条B.2条C.3条D.4条
[单选题]A.1条B.2条C.3条D.4条
[单选题]A.1条B.2条C.3条D.4条
[单选题]A.21.5~22.5m/sB.16.5~17.5m/sC.14.5~15.5m/sD.10~11m/s
[单选题]A.右房血栓B.三尖瓣赘生物C.右房黏液瘤D.正常声像图E.二尖瓣脱垂
[单选题]A.左小腿淋巴管水肿B.左小腿皮下组织水肿C.左小腿浅静脉血栓D.左小腿肌肉水肿
[单选题]A.中央性前置胎盘B.胎盘早期剥离C.胎儿脐带绕颈D.胎儿畸形E.边缘性前置胎盘
[单选题]A.眶下间隙B.颊间隙C.咽旁间隙D.颏下间隙E.舌下间隙