单选题Which of the following is STP BEST identified by under the cable sheath？（）A Number of twists in wiresB Number of wiresC LubricantD Foil
题目
单选题
Which of the following is STP BEST identified by under the cable sheath？（）
A
Number of twists in wires
B
Number of wires
C
Lubricant
D
Foil