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【单选题】
钢绞线常规检验的标距长度一般不小于（）。A.
50cm
B.
60cm
C.
70cm
D.
80cm
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举一反三
【单选题】Only when he met the girl his aunt introduced to him ▲ that he had seen her before .
A.
he realized
B.
realize he
C.
did he realized
D.
he did realize
【单选题】The girl ___aunt is a famous singer is fond of music.
A.
who
B.
whom
C.
that
D.
Whose
【单选题】Only when he met the girl his aunt introduced to him ▲ that he had seen her before .
A.
he realized
B.
he did realized
C.
realized he
D.
did he realized
【单选题】The girl is waiting for her aunt on ___ side of the road.
A.
other
B.
another
C.
the other
D.
one other
【简答题】PLC对用户程序的扫描过程分为三个阶段。其中在程序执行阶段, PLC对程序按顺序进行扫描,如果程序是题型图表示,则总是按照从上到下、______的顺序进行扫描。
【单选题】The girl ___aunt is a famous singer is fond of music.
A.
who
B.
whom
C.
that
D.
whose
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