入冬前对变电所的门窗要仔细检查，发现不严的要及时更换，以免室内低温（）
查看答案
室外电机的轴承润滑脂一律使用环境温度为-10℃及以下的润滑脂，以满足电机设备在冬季安全运行（）
A. 对
B. 错
防冻防凝工作不必纳入巡检内容，各班不用进行交接（）
A. 对
B. 错
RegardingEPIRB,whichisfalse？（）
A. Vessel information recovered from the digital encoded message provided by the satellite EPIRB.
B. Doppler shift of EPIRB signal is measured.
C. Information received from EPIRBs is time-tagged and transmitted to any Local User Terminal in the satellites view.
D. EPIRB works in the HF bands
WhatisARQ？（）
Automatic Receiver Quieting.
B. Automatic Repeat reQuest.
C. Automatically sent tRansmit Qsignals.
D. Automatic Relay without Question
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