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【多选题】
变压器励磁涌流的特点有（）。A.
包含有很大成分的非周期分量，往往使涌流偏于时间轴的一侧；
B.
包含有大量的谐波分量，并以二次谐波为主；
C.
励磁涌流波形之间出现间断；
D.
包含有大量的谐波分量，并以三次谐波为主。
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【简答题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain about their problems an...
【简答题】Life is difficult. But life is no longer difficult when we truly understand and accept it. Most people do not fully see this truth. Instead, they complain about their problems and difficulties. They t...
【单选题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain about their problems an...
A.
everybody has problems
B.
we become stronger by meeting and solving the problems of life
C.
life is difficult because our problems bring us pain
D.
people like to complain about their problems
【简答题】After the flood, life in the region is (extreme) ______ difficult.
【单选题】________ some students are not aware of is ________ difficult life can be if they are not devoted to study.
A.
That; how
B.
Which; what
C.
What; what
D.
What; how
【简答题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain(抱怨) about their problem...
【简答题】After the flood, life was (extreme) ________ difficult for the farmers in this area.
【单选题】You can't imagine ______ in those days.
A.
how difficult my life was
B.
how my life was difficult
C.
how was my life difficult
D.
my life was how difficult
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