题目内容

高压熔断器过热，现象为变色、温升异常，下列处理原则正确的是（）。

A. 不同相别温差过大，更换过热相的高压熔断器
B. 电容器喷射式熔断器温度超过45℃需更换
C. 额定温升超过说明书规定值时需更换
D. 若更换后过热现象未消除，检查连接处是否接触不良，通知专业班组检查被保护设备

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What are two important considerations when using 2- or 4-channel 15216 OADMs?（） (Choose two.)

All "Add" channels require uniform power levels.
B. The flexibility of wavelengths per OADM is limited.
C. It is easier to balance "Pass-Through" and "Add" channels.
D. There is lower pass-through loss using multi-channel OADMs.
E. You can extract a single channel without dropping other channels.

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