Are electrical installations properly fixed so that they cannot easily fall down?
电力装置是否安装妥当，以致不会很容易掉下来？
Metal work, paint coatings and electrical installations all require regular inspection.
金属加工、涂漆和电气安装都需要定期检查。
Metal work, paint coatings and electrical installations all require regular inspection.
金属加工、涂漆和电气安装都需要定期检查。
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