Which of the following electric motors would be the safest and most reliable to use on the main deck of a vessel in foul weather conditions?（） ["Sealed motors","Drip proof motors","Enclosed motors","Watertight motor"]
大型变压器围屏爬电故障的原因和特点是什么？
箱位的表示方法，由贝位、（）和层位三部分组成。
以前年度发现的需要调整的账务，采用的会计事项账务调整的方法有（）。 ["当日冲销","隔日冲正","反向蓝字调整法","红字更正法"]
A resistance in a circuit of unknown value is to be tested using the voltmeter/ammeter methodTherefore, the meters should be connected with（）. ["both meters in series with the resistance","both meters in parallel with the resistance","the ammeter in series and the voltmeter in parallel with the resistance","the ammeter in parallel and the voltmeter in series with the resistance"]
什么是长日植物？
