下列不属于预防尿瘘的措施是()
A.加强产前检查
B.正确处理头盆不称的情况
C.提高产科手术质量
D.嘱产妇在产后及时排尿
E.必要时应该留置尿管
参考答案:D
As a teacher, I seldom give my students so difficult a problem ________ they can not work out.
A.that
B.if
C.in order that
D.as
下列四种生物,在细胞结构组成上不同于其他几种的是[ ]
A.
B.
C.
D.