Proper lifting technique for heavy items is:（）
WhichofthefollowingisatruestatementwhenpromiscuousmodeisenabledonanIntegratedVirtualEthernet?()A.ThephysicalportcanbeusedaspartofaSharedEthernetAdapter（SEA）.B.AllphysicalportsontheHostEthernetAdapter（HEA）defaulttopromiscuousmode.C.Multiplelogicalportscanbeassignedtoaphysicalportifthatlogicalportisinpromiscuousmode.D.AllphysicalportsthatbelongtothesameportgroupwillbesettopromiscuousmodeontheHostEthernetAdapter（HEA）.
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Which safety precaution（s）should be observed during crane operations ________．A.Checking for proper lifting from beneath the load during cargo operationsB.Using the proper slings or other lifting devices during cargo operationsC.Relaying communications to port agents on the pier during cargo hoistsD.All of the above
The universal lifting spreader is a lifting device used on ______．A.dockside container cranesB.shipboard container cranesC.straddle trucksD.straddle cranes
Mechanical lifting of air by the upslope slant of the terrain is called ______.A.vertical liftingB.convective liftingC.advective liftingD.topographic lifting
导致丁型病毒性肝炎的病毒为（ ）A：HAV B：HBV C：HCV D：HDA：E：HEA：
A.Developing the technique is not as easy as it seemsB.It is not so urgent to perfect the technique before 2020C.The application of this technique seems to be merely an illusionD.The application of this technique would be unaffordable
A.Developing the technique is not as easy as it seems.B.It is not so urgent to perfect the technique before 2020.C.The application of this technique seems to be merely an illusion.D.The application of this technique would be unaffordable.
