题目内容
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[单选题]
ZD9-C220/2.5K型电动转辙机,当锁闭块从终端位往回移动,锁闭杆斜面与检查柱斜面接触后,锁闭杆再移动()时,表示接点组应可靠断开开关的常闭接点。
A.11mm
B.12mm
C.13mm
D.14mm
答案
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A.11mm
B.12mm
C.13mm
D.14mm