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單項(xiàng)選擇題

60kg/m鋼軌12號道岔第一牽引點(diǎn)S7OOK轉(zhuǎn)轍機(jī)檢測桿動程為（）.

A.115mm
B.120mm
C.150mm
D.160mm

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單項(xiàng)選擇題

60kg/m鋼軌12號道岔第二牽引點(diǎn)S7OOK轉(zhuǎn)轍機(jī)額定轉(zhuǎn)換力為（）.

A.2000N
B.3000N
C.4000N
D.5000N

單項(xiàng)選擇題

60kg/m鋼軌12號道岔第一牽引點(diǎn)S7OOK轉(zhuǎn)轍機(jī)額定轉(zhuǎn)換力為（）.

A.1500N
B.1800N
C.2000N
D.3000N