儿童期最常见的肾肿瘤是()
A.肾细胞瘤
B.多囊肝合并多囊肾
C.肾母细胞瘤
D.肾错构瘤
E.肾畸胎瘤
参考答案:C
如果规模报酬不变,单位时间里增加了10%的劳动使用量,但保持资本量不变,则产出将______。
A.增加10% B.减少10%C.增加大于10% D.增加小于10%
It ______ we had stayed together for a couple of weeks ______ I found we had a lot in common.
A.was until; when
B.was not until; that
C.was not until; when
D.was until; that