题目内容

下列植物中属于杉科的有()。

A. 水杉
B. 冷杉
C. 银杉
D. 云杉
E. 三尖杉
F. 红豆杉
G. 白豆杉
H. 穗花杉
I. 落羽杉

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简述中国新诗戏剧性的变化和原因

下列哪种说法正确()

A. 分离非极性组分一般选用极性固定液
B. 色谱柱寿命与操作条件无关
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As a frame leaves a Layer 3 device, the Layer 2 encapsulation information is changed from what it was when it entered the devicE.For what two reasons can this happen? ()

A. The data is moving from 10BASE-TX to 100BASE-T
B. The WAN encapsulation type has changed.
C. The data format has changed from analog to digital.
D. The source and destination hosts are in the same subnet.
E. The source and destination MAC addresses have changed.

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