The technician notices that one of the wires in a CAT5 cable is cut in half. Which of the followingconnectivity issues did the technician discover?()A.Open pairsB.AttenuationC.CrosstalkD.Interference
题目
A.Open pairs
B.Attenuation
C.Crosstalk
D.Interference
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第1题：
A mooring line is described as being 6x24, 1-3/4 inch wire rope. What do the above numbers refer to ? ______.
A.Strands, yarns, circumference
B.Strands, wires, diameter
C.Wires, yarns, diameter
D.Strands, circumference, wires
正确答案：B
系泊缆绳被描述为6x24,1-3/4英寸的钢丝绳。以上数字代表什么？股数、金属丝、直径。 -
第2题：
The relative pronoun "which" in the last paragraph (Line 6) refers to （ ）.A.experts
B.periods
C.theories
D.issues答案：D解析： -
第3题：
如果要使用jieba库的全模式进行分词操作，需要在命令中加入参数______。
A．cut=true
B．cut=True
C．cut_all=true
D．cut_all=True
搜索引擎模式?精确模式?全模式 -
第4题：
It's said that he's looking for a new job, one_________ he can get more free time.A．when
B．where
C．that
D．which答案：B解析：考查定语从句。one是a newjob的同位语，同时one是先行词，后面是个定语从句，由于定语从句he can get more free time不缺少任何成分，说明空格处在从句中作状语，需要用where引导，意为“从新工作中获得更多的自由时间”。如果选which的话，应该是one(a job)from which he can get more free time，故选B。 -
第5题：
6、对于下述命令，如何利用pipe符号进行改写： by_cut ＜- group_by（diamonds, cut) count_cuts ＜- mutate（by_cut, N = n（))
A．count_cuts ＜- diamonds %＞% group_by(cut) %＞% mutate(N = n())
B．count_cuts ＜- diamonds %＞% mutate(N = n()) %＞% group_by(cut)
C．count_cuts ＜- diamonds %＜% group_by(cut) %＜% mutate(N = n())
D．count_cuts ＜- diamonds %＜% mutate(N = n()) %＜% group_by(cut)
管子; -
第6题：
选择下列计算结果 cut3[x_]:= Which[x ＜ -1,-1,x ＜ 1,x,True,1] cut3/@{-2,-1,0,1,2}
A．{-1,-1,0,1,2}
B．{-1,-1,0,1,1}
C．{-2,-1,0,1,1}
D．{-2,-1,0,1,2}
B