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【判断题】
以电气回路为基础，将继电器和各元件的线圈、接点按保护动作顺序自左而右，自上而下绘制的接线图为二次回路展开图。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】我国对无船承运人的管理实行_____和______ 制度。
【单选题】That is the only thing __I bought from the supermarket.
A.
which
B.
that
C.
what
D.
in which
【单选题】Compared with genetic engineering of food crops, genetic engineering of trees _____.
A.
began much later
B.
has developed more slowly
C.
is less useful
D.
is less controversial
【单选题】There are_____ people in the supermarket .I t is so crowded.
A.
hundreds
B.
hundreds of
C.
hundred of
D.
hundred
【单选题】The genetic disorders are caused mainly by the mutations in a single gene, and their inheritances follow classical MENDELIAN inheritance. Then these genetic disorders are called
A.
single -gene disorders
B.
multifactorial genetic disorders
C.
chromosomal genetic disorders
D.
mitochondrial genetic disorders
【简答题】I was shopping in the supermarket when I heard a young voice boom from across the aisle. “Mom, come here! There’s this lady here my size!” The mother rushed to a boy she called Mickey; then she turned...
【简答题】用所给词的正确形式填空。 1. I enjoy ______(listen) to music. 2.The supermarket is on the ________(three) floor. 3. I like spring ______(well) than summer. 4. We enjoyed ________(oneself) last Sunday. 5. We are ex...
【单选题】There are_____ people in the supermarket .I t is so crowded.
A.
hundred
B.
hundreds
C.
hundreds of
D.
hundred of
【简答题】遗传密码(genetic codon)
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