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【简答题】
同一标号砂浆试块组数n≥30时,28天龄期试块抗压强度应同时满足强度保证率 不少于80% ,任意一组试块强度不低于 设计强度的85% 。试块组数n<30组,应满足各组试块的 平均强度 不低于设计强度,任意一组试块强度不低于(__)。
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皮皮学刷刷变学霸
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【简答题】在三相五线制供电系统中,一根相线与另外一根相线之间的电压称为 ____ 。通常国内该电压为 ____ V。一根相线与零线之间的电压称为 ____ 。通常国内该电压为 ____ V。
【单选题】Though ______money ,his parents managed to send him to university.
A.
lacked
B.
lacking of
C.
lacking ( vt.)
D.
lacked in
【单选题】—Would you like me to go to the dentist with you? —No, you______with me.
A.
need not to go
B.
need not go
C.
do not need go
D.
not need go
【单选题】I want to go to the cinema, but you _____ with me.
A.
need not to go
B.
do not need go
C.
need not go
D.
need go not
【单选题】I want to go to the dentist, but you ______ with me.
A.
need not to go
B.
do not need go
C.
need not go
D.
need go not
【单选题】_____ confidence led to his failure in the interview. [ ]
A.
Lacking of
B.
Lack for
C.
Lacking in
D.
Lacking
【单选题】Though _______ money, his parents managed to send him abroad.
A.
lacked
B.
lacking of
C.
lacking
D.
lacked in
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