Calculator is to compute as () A: plug is to insert B: clamp is to grip C: saddle is to straddle D: bridge is to suspend E: incinerator is to warm

What is the most common cause of injury of membranous urethra?() A: Pelvic fracture B: Gunshot wound C: Straddle injury D: Iatrogenic injury

Which is the most common reason of membranous urethral injury? ( ) A: Penetrating wound B: Straddle injury C: Iatrogenic injuries D: Pelvic fracture E: Catheterization

踏板健美操中Straddle的动作要领是身体正直，膝关节放松，手臂协调摆动，侧位站在踏板前，完成该动作需要4拍