单项选择题
A.锁体不应<50mm,锁梁Ф不应<10mm B.锁体不应<55mm,锁梁Ф不应<12mm C.锁体不应<50mm,锁梁Ф不应<12mm D.锁体不应<55mm,锁梁Ф不应<10mm
A.锁体不应<55mm,锁梁Ф不应<10mm B.锁体不应<50mm,锁梁Ф不应<12mm C.锁体不应<50mm,锁梁Ф不应<10mm D.锁体不应<55mm,锁梁Ф不应<12mm
A.8mm B.10mm C.12mm D.15mm