2. 职称英语
  3. What does the passage mainly discuss? [br] The author mention "l.0mm" in line 14

What does the passage mainly discuss? [br] The author mention "l.0mm" in line 14

游客2024-01-05  28
问题 What does the passage mainly discuss? [br] The author mention "l.0mm" in line 14 in describing the
选项 A、thickness of a layer of organisms that was deposited on an object
B、diameter of the fibers that were in the guncotton filters
C、thickness of the microscope slides that were used
D、size of the particles that that were collected
答案 D
解析
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