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【多选题】
扦插成活与以下娜几个因素有关?( )A.
枝条的发育程度
B.
环境温度
C.
空气湿度
D.
植物种、品种特性
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举一反三
【单选题】In the architectural history, Romans _________.
A.
found a natural building material that can be used to produce concrete
B.
were the first people who could produce concrete
C.
found a truly waterproof cement
D.
contributed most to the development of architecture
【简答题】下列属于铁路货物运输优点的是()。
【单选题】That the author mentions the old Romans is ______.
A.
to compare the old Romans with today's people
B.
to give an example
C.
to show human beings in the past know nothing better
D.
to indicate human beings used to be bloodthirsty
【单选题】That the author mentions the old Romans is ______.
A.
To compare the old Romans with today's people
B.
to give an example
C.
to show human beings in the past know nothing better
D.
to indicate human beings are used to bloodthirsty
【简答题】六轴工业机器人的手动操作有单轴、线性、（ ）三种运动模式
【单选题】It can be inferred form. the passage that______.
A.
the Romans were bored by their numberical system
B.
the Romans invented abaci
C.
the Romans were very rigid
D.
the Romans didn't want to learn Greek mathematics
【简答题】六轴工业机器人的手动操作有（ ）、线性、重定位三种运动模式。
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