Upon the completion of required tests, a ____ should be placed on each extinguisher, showing the date and the person who completed the tests.A.capB.discC.tagD.cover
Upon the completion of required tests, a ____ should be placed on each extinguisher, showing the date and the person who completed the tests.
A.cap
B.disc
C.tag
D.cover
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当R－EACH采用预留接入模式的时候,它的接入前缀和接入消息承载信道错误的是:() A.R-ACH，R-EACHB.R-EACH，R-ACHC.R-EACH，R-EACHD.R-EACH，R-CCCH
当R－EACH采用基本接入模式的时候,对于接入前缀和接入消息的承载信道错误的是:() A.R-ACH，R-EACHB.R-EACH，R-ACHC.R-EACH，R-EACHD.R-EACH，R-CCCH
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When a teacher wants to test students'__________ listening skills, grammar, vocabulary and pronunciation, which of the following test format is the most suitable one?A．True or false questions.B．Completion.C．Dictation.D．Translation.
When a teacher wants to test students'listening skills, grammar, vocabulary and pronunciation, which of the following test format is the most suitable one?A．True or false questions.B．Completion.C．Dictation.D．Translation.