闭袢性肠梗阻
参考答案:
闭袢性肠梗阻:一段肠袢两端完全阻塞,如肠扭转
We were suggested that we ____ attention to protecting wild animals.
A.pay
B.could pay
C.paid
D.must pay
影响混凝土抗冻性的因素及措施。