选择： 电梯在相同的电压下，空载下行时与满载上行时运行电流是（ ）。 A.下大上小 B.基本相同 C.无法确定 D.下大上小 — B.基本相同

判断： D×11/420-2007《电梯安装、改造、重大维修和维护保养自检规则》规定，定期自检记录由维护保养单位负责人、维护保养人员、质检员及使用单位电梯安全管理人员签字。

判断： 制动器在正常情况下，通电时保持制动状态。

判断： 两列导轨顶面间的偏离差距，轿厢导轨为±2mm，对重导轨为±3mm。

判断： 导向轮的主要作用是调整拽引绳与拽引轮的包角

判断： 任何一扇门未关闭，电梯都不能起动

判断： 强迫关门装置可以自动将层门和轿门一起关闭

判断： 当电梯不在层站时，层门无论什么原因开启，必须有强迫关门装置使该层门自动关闭

判断： 调压调速电梯的制动通常采用能耗制动，是把电机定子绕组接入直流电

选择： 电梯层门锁的锁钩啮合深度达到（ ）以上时电气接点才能接通。 A.3mm B.5mm C.7mm D.8mm

选择： 各类电梯的平衡系数应在（ ）范围内。 A.0.4～0.45 B.0.45～0.5 C.0.4～0.5 D.0.5～0.6

When I graduated from Brown after majoring in women's studies, I made my first PBS documentary, 'Women of Substance.' My first feature documentary was called 'American Hollow,' which I did for HBO and was at the Sundance Film Festival.

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If I know what love is, it is because of you.

Now, we occupy a lowly position, both in space and rank in comparison with the heavenly sphere, and the Almighty is Most High not in space, but with respect to absolute existence, greatness and power.

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