导线角度闭合差调整的方法是反符号按______分配。
参考答案:角度个数平均
7.05和7.0599保留一位小数都是7.l.______.(判断对错)
Eye doctors recommend that a child’s first eye exam____ at the age of six months old.
A.was
B.be
C.were
D.is