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【简答题】
成年男性平均摆脱电流约为 ,成年女性平均摆脱电流约为 ,儿童的摆脱电流较成人要小。
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【简答题】磁介质均匀磁化时,磁化强度与磁化电流有什么关系?写出它们的关系式。
【简答题】______ is a homogeneous mixture of chemically distinct substances that forms a phase. The components (substances) lose their individual identities. A) Alloy B) Solute C) Solution D) Solvent
【单选题】I strongly object ____ like a child. A. to be treated B. of being treated C. to being treated D. of treating
A.
to be treated
B.
of being treated
C.
to being treated
D.
of treating
【单选题】It is so small _________it is put together chemically.
A.
and
B.
so
C.
that
D.
because
【单选题】The internal part of the boiler, if found _____, has to be chemically washed by yard.
A.
deformed
B.
rusted
C.
cracked
D.
scaled
【简答题】设V为P上的线性空间，W 1 ,W 2 ，…，W n 为V的子空间，若 ,则W i ∩W j ={0},i=1,2,…,n,j=1,2,…,n,i≠j. 设V为P上的线性空间，W 1 ，W 2 ，…，W n 为V的子空间，若W i ∩W j ={0}，i=1,2,…,n,j=1,2,…,n,i≠j，则 ?
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