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【单选题】
单位工程施工组织设计是以单位工程为对象，直接( )现场施工活动的技术文件。A.
指导
B.
领导
C.
控制
D.
协调
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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
【单选题】His thorough knowledge and competence have gained ________ from his colleagues.
A.
fame
B.
recognition
C.
knowledge
D.
popular
【单选题】His thorough analysis of the problem showed great ________.
A.
intelligent
B.
perception
C.
despair
【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】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.
A、NaHCO3 和Na2CO3
B.
B、NaCl和 NaOH
C.
.NH3和NH4Cl
D.
D、HAc和NaAc
【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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