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【单选题】
设学生S、课程C、学生选课SC的关系模式分别为S(SNO,SNAME,SDEP,SAGE,SADDR)、C(CNO,CNAME,PCNO)以及SC(SNO,CNO,GRADE)，与关系代数表达式πSNO,SNAME,GRADE(σCNAME='数据库'(S＞＜SC＞＜C)等价的演算表达式为(35)S(U)∧SC(V)∧C(W)∧(36)∧(37)。
A.
B.
C.
D.
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举一反三
【单选题】The bus is full and we can't ________ any more passengers in.
A.
cram
B.
contribute
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【单选题】Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium,...
A.
tree
B.
bus
C.
star
D.
ring
查看完整题目与答案
【单选题】Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium,...
A.
routers
B.
stations
C.
servers
D.
switches
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【简答题】The bus is full and we can't ( ) any more passengers in.
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【单选题】The bus is full and we can’t ________ any more passengers in.
A.
contribute
B.
original
C.
cram
D.
intake
E.
underestimate
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【单选题】The bus is full and we can’t ________ any more passengers in.
A.
cram
B.
grab
C.
contribute
D.
worsen
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【单选题】根据印花税法律制度的规定,下列各项中,不属于印花税纳税人的有
A.
合同的担保人
B.
立据人
C.
立合同人
D.
领受人
查看完整题目与答案
【单选题】根据印花税法律制度的规定,下列各项中,不属于印花税纳税人的是
A.
立合同人
B.
立据人
C.
担保人
D.
领受人
查看完整题目与答案
【单选题】Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium,...
A.
medium
B.
connection
C.
token
D.
resource
查看完整题目与答案
【单选题】根据印花税法律制度的规定,下列各项中,不征印花税的是( )。
A.
工商营业执照
B.
房屋产权证
C.
土地使用证
D.
税务登记证
查看完整题目与答案
相关题目：
【单选题】The bus is full and we can't ________ any more passengers in.
A.
cram
B.
contribute
查看完整题目与答案
【单选题】Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium,...
A.
tree
B.
bus
C.
star
D.
ring
查看完整题目与答案
【单选题】Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium,...
A.
routers
B.
stations
C.
servers
D.
switches
查看完整题目与答案
【简答题】The bus is full and we can't ( ) any more passengers in.
查看完整题目与答案
【单选题】The bus is full and we can’t ________ any more passengers in.
A.
contribute
B.
original
C.
cram
D.
intake
E.
underestimate
查看完整题目与答案
【单选题】The bus is full and we can’t ________ any more passengers in.
A.
cram
B.
grab
C.
contribute
D.
worsen
查看完整题目与答案
【单选题】根据印花税法律制度的规定,下列各项中,不属于印花税纳税人的有
A.
合同的担保人
B.
立据人
C.
立合同人
D.
领受人
查看完整题目与答案
【单选题】根据印花税法律制度的规定,下列各项中,不属于印花税纳税人的是
A.
立合同人
B.
立据人
C.
担保人
D.
领受人
查看完整题目与答案
【单选题】Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium,...
A.
medium
B.
connection
C.
token
D.
resource
查看完整题目与答案
【单选题】根据印花税法律制度的规定,下列各项中,不征印花税的是( )。
A.
工商营业执照
B.
房屋产权证
C.
土地使用证
D.
税务登记证
查看完整题目与答案
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