单项选择题
A.扳手B.十字螺丝刀C.管钳D.一字螺丝刀
A.20B.30C.40D.50
A.活动扳手B.螺丝刀C.管钳D.老虎钳
A.1.5Mpa-1.8MpaB.1.5Mpa-2.5MpaC.2Mpa-2.5MpaD.1.5Mpa-2Mpa
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