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断电器触电分开时，初级电流总是小于欧姆定律得出的稳定值。()

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The phrase "to sign on"(Line 2, Para. 2)most probably means______.

A. to check on the availability of jobs at the jobcentre
B. to accept the government"s restrictions on the allowance
C. to register for an allowance from the government
D. to attend a governmental job-training program

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断电器触电分开时，初级电流总是小于欧姆定律得出的稳定值。()

分电器上电容器断路，易使断电器触电烧蚀。()

断电器触电与点火线圈的初级绕组串联。()

断电器触电间隙过大过小都会使次级电压降低。()

The phrase "to sign on"(Line 2, Para. 2)most probably means______.