單項(xiàng)選擇題D7型電動(dòng)轉(zhuǎn)轍機(jī)動(dòng)作桿行程為()

A.156±0.5mm
B.156±1mm
C.156±2mm
D.156±3mm


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1.單項(xiàng)選擇題ZD7型電動(dòng)轉(zhuǎn)轍機(jī)電動(dòng)機(jī)額定電壓()

A.100V
B.150V
C.200V
D.250V

4.單項(xiàng)選擇題ZD6型電動(dòng)轉(zhuǎn)轍機(jī)自動(dòng)開閉器動(dòng)接點(diǎn)環(huán)不得低于()

A.靜接點(diǎn)片
B.靜接點(diǎn)座
C.靜接點(diǎn)組
D.靜接點(diǎn)

5.單項(xiàng)選擇題ZD7型電動(dòng)轉(zhuǎn)轍機(jī)電動(dòng)機(jī)的刷間總電阻為()

A.1.35Ω±0.0675Ω
B.2.3501Ω±0.0675Ω
C.1.258Ω±0.0677Ω
D.3.35Ω±0.0675Ω