晶状体后面的曲率半径是()
A.7.8mm
B.6mm
C.9mm
D.10mm
参考答案:B
Please find ____________ where it is. [ ]
A. for
B. to
C. out
线匝间出现间隙的原因是()
A.操作时绕接器移动
B.芯线插入过长
C.接线端子插入不牢
D.饶接时间短