乳房局部皮肤回缩（skin retraction）可见于：

中国大学MOOC: 乳房局部皮肤回缩（skin retraction）可见于：

TV may be a welcome ______ after a day’s hard work. A: distraction B: tribulation C: misconception D: retraction

‌The landing gear consists of ( )and ( ).​ A: two main landing gears B: a nose landing gear C: shock-absorbing strut D: extension and retraction system

‌乳房局部皮肤回缩（skin retraction）可见于：​ A: 乳腺癌 B: 乳腺炎 C: 乳腺纤维腺瘤 D: 外伤 E: 发育异常

The direct motivation for lung ventilation comes from A: lung contraction B: elastic retraction of the lungs C: relief and contraction of respiratory muscles D: intrapulmonary pressure and atmosphere pressure difference

乳房局部皮肤回缩（skin retraction）可见于： A: 乳腺炎后 B: 乳腺纤维腺瘤 C: 乳腺癌 D: 外伤后 E: 发育异常

What is the earliest and quickest response of blood vessels after an injury? () A: Vascular endothelial cell contraction B: Platelet aggregation C: Clot retraction D: The wound callus E: Blood flowing retarding

What is the earliest and quickest response of blood vessels after an<br/>injury?() A: Vascular endothelial cell contraction B: Platelet aggregation C: Clot retraction D: The wound callus E: Blood flowing retarding

The factors affecting delivery are ( ). A: uterine action B: birth canal C: uterine contractility (rhythmicity, symmetry, polarity, retraction<br/>effect) D: contractility of abdominal wall muscle and diaphragm and<br/>contractility of levator ani muscle