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电动吊篮的悬吊平台在工作中的纵向倾斜角度不应大于()°。

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使用吊篮电源箱的其他电动工具,额定电压不得超过()V。

听力原文： Expanded use of computer technology, development of stronger and lighter materials, and research on pollution control will produce better, "smarter" automobiles./In the 1980s the notion that a car would" talk" to its driver was science fiction; by the 1990s it had become reality./Onboard navigation was one of the new automotive technologies in the 1990s./By using the satellite-aided global positioning system (GPS), a computer in the automobile can pinpoint the vehicle’s location within a few feet./The onboard navigation system uses an electronic compass, digitized maps, and a display screen showing where the vehicle is relative to the destination the driver wants to reach./After being told the destination, the computer locates it and directs the driver to it, offering alternative routes if needed./Some cars now come equipped with GPS locator beacons, enabling a GPS system operator to locate the vehicle, map its location/and, if necessary, direct repair or emergency workers to the scene./
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金属丝式应变片的灵敏系数恒小于线材的灵敏系数。()

正确的驾驶坐姿可以帮助驾驶员预防腰痛和颈椎病。()