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【简答题】
注射模具由成型零部件、______、______、导向机构、侧向分型与抽芯机构、支撑零部件、排气系统、温度调节系统等组成。
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【单选题】_____ sci-fi movies ____, Avatar can be called a classic.
A.
As ... talk
B.
As ... like
C.
As ... go
D.
As ... set
【单选题】Nothing else_______more important than water in the place like a desert.
A.
we can’t find
B.
can’t we find
C.
can we find
D.
we can find
【简答题】As we all know, the environment around us is getting worse and worse. In some places we can’t see fish 1 in the river or trees on the hills. Some people even have no clean water to drink. Recently, a ...
【单选题】We can learn from the fourth paragraph that
A.
a substantial cut in annual revenue is called for.
B.
defense and social welfare programs should undergo cuts.
C.
we should leave intact programs for bettering people's living.
D.
we should exercise less control over monetary policy.
【单选题】The type of assimilation of the word “ this year ∕'Tis ' jiə∕-----∕TiF Fiə∕can be called _____ .
A.
Progressive Assimilation
B.
Regressive Assimilation
C.
Reciprocal Assimilation
【简答题】试用4选1数据选择器产生逻辑函数L(A, B, C)=∑m(1,2,6,7)。
【简答题】试用4选1数据选择器74HC153产生逻辑函数L( A,B,C )= ∑ m ( 1,2,6,7 )。
【简答题】在实际的数据库设计中,通常要用范式对关系进行规范化,其中,第一范式:( )、第二范式: ( ) ;第三范式:( )。一般达到 ( ) 即可。
【单选题】新建、更改或外委施工,牵引变电所、变、配电所、高压电缆进行试验时,由试验单位签发( )或( )。(1分)
A.
工作票安全命令
B.
工作票倒闸作业票
C.
安全命令倒闸作业票
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