分解因式:
(1)x3y-6x2y2+9xy3;
(2)(a2+4b2)2-16a2b2。
解:(1)xy(x-3y)2;
(2)(a+2b)2(a-2b)2。
I don’t your idea of sending your daughter to Britain to study, because she is too young to take care of herself.
A.adjust to
B.refer to
C.subscribe to
D.appeal to
25岁,停经2个月,阵发性腹痛伴 * * 出血多于月经量1天。妇科检查:宫口有组织物堵塞,子宫如2个月妊娠大小。最恰当的处理是()
A.继续观察
B.予以保胎治疗
C.立即行清宫术
D.给予输液及止血剂
E.进一步查尿HCG以明确诊断