A.Enforcing laws controlling navigation, shipping, immigration and fishing.
B.Enforcing taws affecting the privately-owned boats in the U. S.
C.Searching for missing boats and rescuing people.
D.Training people to be good swimmers along the beach.
第9题
在我国,引起急性胰腺炎最常见的病因是
A.暴饮暴食
B.慢性胰腺炎急性发作
C.胆道疾病
D.流行性腮腺炎
E.酒精中毒
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!