一位母亲带了一个1岁的正常男孩进行体格检查,测得的头围应该是()
A.40cm
B.38cm
C.46cm
D.48cm
E.50cm
参考答案:C
12.Meeting a stranger to travel is different from traveling with friends. The former holds____surprises.
A.less
B.much
C.more
D.Fewer
引入光缆进入机架时,其弯曲半径应不()。
A.大于光缆直径的15倍
B.小于光缆直径的15倍
C.大于光缆半径的15倍
D.小于光缆半径的15倍