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【多选题】
校准改装表需要下列哪几步( )A.
校准量程；
B.
计算不确定度等级；
C.
校准刻度；
D.
计算电阻值
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举一反三
【单选题】__________ he had failed the exam for many times, he succeeded _____his thorough _______.
A.
Though , thought, through
B.
Through , though, thought
C.
Though, through , thought
D.
D . Through, thought, though
【单选题】下列各组物质按等物质的量混合配成溶液后,其中不是缓冲溶液的是( )
A.
Na 2 CO 3 和 NaHCO 3
B.
NaCI 和 NaOH
C.
NH 3 和 NH 4 CI
D.
HAc 和 NaAc
【简答题】He had a __________(thorough)knowledge of the subject.A. thorough
【单选题】His thorough knowledge and competence have gained ________ from his colleagues.
A.
fame
B.
recognition
C.
knowledge
D.
popular
【单选题】-----He should have come to join in the thorough cleaning. -----He________, I think. It’s not his turn.
A.
needn’t have to
B.
needn’t have
C.
didn’t have to
D.
doesn’t need to
【单选题】下列各组物质按等物质的量混合配成溶液后，其中不是缓冲溶液的是
A.
NaHCO3和Na2CO3
B.
NaCl和 NaOH
C.
NH3和NH4Cl
D.
HOAc和NaOAc
【单选题】The Attorney General ordered a federal autopsy of Brown's body, seeking to _________ the family and community, there would be a thorough investigation into his death .
A.
ensure
B.
insure
C.
assure
D.
ascertain
【单选题】下列各组物质按等物质的量混合配成溶液后,其中不是缓冲溶液的是
A.
Na2CO3和 NaHCO3
B.
NaCl和NaOH
C.
NH3·H2O和NH4Cl
D.
HAc和NaAc
【单选题】—He should have come to join in the thorough cleaning. —He _____. I don’t think it was his turn.
A.
needn’t have to
B.
needn’t have
C.
didn’t have to
D.
doesn’t need to
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