【单选题】【习题10】某蓄水池有一进水口A和一出水口B,池中无水时,打开A口关闭B口,加满整个蓄水池需2小时;池中满水时,打开B口关闭A口,放干池中水需1小时30分钟。现池中有占总容量 的水,问同时打开A、B口,需多长时间才能把蓄水池放干?( )
【单选题】The ONS 15216 is a 32-channel system. The ONS 15216 OADMs are capable of adding and dropping one, two, or four channels. How are the OADMs provisioned to add and drop specific channels?()
A.
The ONS 15216 OADM can be provisioned to add/drop one, two, or four channels via Cisco Transport Manager (CTM).
B.
The ONS 15216 OADM consists only of a four-channel module, and the number of ports utilized determines whether it is a one, two, or four channel OADM.
C.
Three separate OADM modules are available for one, two, and four channels. The wavelengths to be dropped and added are programmable via Cisco Transport Manager (CTM).
D.
The ONS 15216 OADM consists only of a single-channel module. Two-channel and four-channel support is available by stacking the single-channel module.
E.
The ONS 15216 OADM is available in one, two, four channels. There are 32 single-channel OADM modules, 16 two-channel OADM modules, and 8 four-channel OADM modules.
【单选题】下列哪项检索策略不能提高检索效果?( )
【简答题】将程序补充完整,实现如下功能:下拉列表显示 colleges 数组中的每一个元素 college 选项的 label 值,第一个下拉列表初始显示第三项“机械工程”,第二个下拉列表初始显示第二项“电子信息”。 Selected Country ID : {{ctrl.selectedCollegeId}} Selected College : {{ctrl.selectedColle...
【多选题】在信用证的支付方式下,银行审核单据的标准是( )
【单选题】如果患者有较严重的心肝肾肺等全身疾病则最好使用( )。
【单选题】DTR100的显示发射调制度告警“TX Modul Lev”可能与()模块故障有关。
【多选题】在信用证的支付方式下,银行审核单据的标准是( )。