The equipment in substations protecting direct thunder strikes is called( )

[单选题]The workersfinally [called off] the strikes.A.put offB. endedC. cancelledD.

[单选题]The workersfinally [called off] the strikes.A.put offB. endedC.cancelledD.p

[单选题]The workersfinally [called off] the strikes.A.put offB.endedC.cancelledD.pa

[单选题]is a mechanism used for protecting the users outside of network from accessing some non-authorized computer resources.A．Network CardB．protocolC．FirewallD．Router

[单选题]The metal sheet used to imitate thunder must be________．A．tightly fastened on all sidesB．lying flatC．both A and BD．neither A nor B

[单选题]If a heavy sea strikes the rudder, the shock is transmitted through ___ to the rams, this cause a sudden increase in oil pressure in one of the cylinders.A．the control rodB．the hunting gearC．the floating ringD．the tiller arm

[单选题]According to distribution equipment( )it can be divided into indoor power d

[单选题]The young seedlings remained alive ______the protecting snow.A.underB.below

[单选题]The thunder [scared]the little girl who is sleeping in the room.A.frightene

[单选题]A thunder came down( )they were listening to light music.A.whereB.whileC.wh