Fuse 30—50A spare是（）。
Fuse 30—50A spare是（）。
相关考题：
We have spent all of our spare time()our spare money on the project.A. as soon asB. as long asC. as well as
They spend all their spare time, _________ their spare money, on their experiments.A：as soon asB：as well asC：as long asD：as much as
The primary line module has failed and the spare line module is nowactive.What occurs,by default,when the primary line module returns to an operational status?() A.The primary line module is inactive for five minutes and then becomes active.B.The primary line module is in standby mode，while the spare line module remains active.C.The primary line module becomes active immediately and the spare line module becomes inactive.D.The primary and spare line modules are active for five minutes，after which time the spare line module becomes inactive.
单选题We should apply for annual spare parts according to（） Ⅰ.he need of annual overhaul Ⅱ.he storage of spare parts Ⅲ.he storage capacity of spare parts roomAⅠBⅡCⅠ+ⅡDⅢ
单选题A fuse that blows often should be replaced only with a fuse of （）.Athe recommended current and voltage ratingBhigher current and voltage ratingChigher current and lower voltage ratingDlower current and higher voltage rating
单选题Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be （）.Ahigher than that of copperBlower than that of copperCequal to that of copperDreached when the conductor it is protecting becomes white hot
单选题Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?（）.ASpare charges shall be carried for at least 50 percent of each size and variety required on boardBIf the unit cannot be charged by the vessel's personnel，one spare unit shall be carried in lieu of spare chargesCSpare charges shall be stowed in watertight containers on deckDRegulations concerning spare charges do not apply to unmanned barges