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【单选题】
在三相电路中,已知线电压等于380V,三相负载分别为R1=100欧姆,R2=100欧姆,R3=100欧姆,当R1短路时,其中线电流等于()A.
0A
B.
3.8A
C.
2.2A
D.
中线烧断
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【单选题】下列选项中,为应急管理决策与模拟,提供实时的数据访问,在没有获取足够信息的情况下,做出应急响应决策属于BIM技术应用阶段中的( )
A.
BIM与设计
B.
BIM与施工
C.
BIM与造价
D.
BIM与运维
【简答题】一个 Java 类可以有 ( ) 个直接父类。
【简答题】We’ve talked about snails (蜗牛) and their slow move. But much of the time snails don’t move at all. They are in their shells (壳) —sleeping. Hot sun will dry out a snail’s body. So at the least sign of ...
【简答题】We’ve talked about snails（蜗牛） and their slow move. But much of the time snails don’t move at all. They are in their shells —sleeping. Hot sun will dry out a snail’s body. So at the least sign of hot s...
【简答题】用光杠杆测定钢材杨氏弹性模量,若光杠杆常数(反射镜两足尖垂直距离)d=7.00cm,标尺至平面镜面水平距离D=105.0cm,求此时光杠杆的放大倍数K=___。
【单选题】This is the very novel, about ________ we've talked so much . [ ]
A.
that
B.
it
C.
which
D.
what
【简答题】We’ve talked about snails (蜗牛) and their slow move. But much of the time snails don’t move at all. They’re in their shells ---sleeping . Hot sun will dry out a snail’s body. So at the least sign of ho...
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