肿瘤广泛骨转移时可出现
A.血钙升高
B.血钙降低
C.血镁升高
D.血镁降低
E.血磷升高
参考答案:A
解析:[解题思路] 肿瘤广泛骨转移,破坏骨质,使骨钙释放人血,血钙浓度升高。
If you _____ any problems when you arrive at the airport, give me a ring. [ ]
A. come up with
B. set about
C. run into
D. put aside
环形交叉口的中心岛直径小于下列哪个数据时,坏道的外侧缘石不应做成与中心岛相同的同心圆 ( )
A.20m
B.45m
C.30m
D.60m