2. 外语
  3. Which of the following can produce the strongest shock? The electric catfish has a different electric system in that______.

Which of the following can produce the strongest shock? The electric catfish has a different electric system in that______.

admin2009-06-24  45
问题 Which of the following can produce the strongest shock?
The electric catfish has a different electric system in that______.
选项 A、current moves from the head to the tail.
B、current moves from the tail to the head.
C、current moves from the left to the right.
D、current moves from the right to the left.
答案B
解析
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