单项选择题

滑移率在25~35%这么一个区间既有滑动又有滚动。（）

A.正确
B.错误

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单项选择题

表示原子吸收线轮廓的特征值是中心频率和吸收线半宽度。

A．对
B．错

单项选择题

Study the stages of summary writing below, which have been mixed up. Put them in the correct order.
(a) Write the summary from your notes, reorganizing the structure if needed.
(b) Make notes of the key points, paraphrasing where possible.
(c) Read the original text carefully and check any new or difficult vocabulary.
(d) Mark the key points by underlining or highlighting.
(e) Check the summary to ensure it is accurate and nothing important has been changed or lost.
A、c-b-d-a-e
B、b-c-d-a-e
C、b-c-d-a-e
D、c-d-b-a-e