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【单选题】
关于三相电描述错误的是( )A.
三相电各相有效值相等
B.
三相电各相频率相等
C.
三相电各相位相同
D.
三相电各相相位差为120 0
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反馈参考答案：
举一反三
【简答题】work9 进度问题1.pdf
【简答题】磁感应强度B与( )有关,计算比较复杂。为了使运算简便,引入一个新的辅助计算量——( ),用字母( )表示。磁场中某点的磁场强度等于该点的( )与( )的比值。磁场强度是( )量,它的方向与该点磁感应强度的方向( )。
【单选题】Fortunately, with the help of some local villagers, rescuers were able to gain ________ to the disaster-hit area soon enough.
A.
track
B.
access
C.
means
D.
passage
【简答题】Some local ____ were angry at the building of a hospital
here.A. residents B. advisors C. concepts D. laundries
【简答题】某工程项目计划进度与实际进度如表1所示。 问题 1．根据上某工程计划进度与实际进度表的内容填写投资数据表。 2．计算第6周末的投资偏差和进度偏差。
【单选题】Some local ____ were angry at the building of a hospital here.
A.
teachers
B.
residents
C.
advisors
D.
concepts
【单选题】Some miners were trapped when the local mine was flooded, but luckily, 400 kilograms of milk ________ to them during the rescue. [ ]
A.
got through
B.
brought down
C.
gave away
D.
gave out
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