1.Which fiber optic test device analyzes backscattered light to locate faults and measure loss from one end?
1.哪种光纤测试设备通过分析反向散射光来定位故障并测量从一端到另一端的损耗？
2.Which method represents the safest and most effective soldering practice?
2.以下哪种方法代表了最安全有效的焊接方法？
3.Maximum allowable optical loss for 1300 nm multimode fiber (EIA/TIA 568):
3.1300 nm 多模光纤的最大允许光损耗 (EIA/TIA 568)：
4.Horizontal bar moving up a video screen is caused by:
4.视频屏幕上水平条纹向上移动是由以下原因引起的：
5.In fiber optic systems, bandwidth refers to:
5.在光纤系统中，带宽是指：
6.What factors are used to assess fiber splice quality?
6.评估光纤接头质量的因素有哪些？
7.Cable certification tests for 0.625-inch coax should include:
7.0.625英寸同轴电缆的认证测试应包括：
8.When measuring voltage across a component in a live circuit with a digital multimeter (DMM), what is the correct procedure?
8.使用数字万用表 (DMM) 测量带电电路中元件两端的电压时，正确的步骤是什么？
9.Using the diagram provided, calculate the total resistance in this series circuit.
9.使用提供的图表，计算该串联电路的总电阻。
10.When measuring voltage with a multimeter, how should the probes be connected relative to the circuit or device?
10.使用万用表测量电压时，探头应如何连接到电路或设备？
