说明下面字的意义。曾
Which of the following is a characteristic of a data center core?（） [" Server-to-server traffic always remains in the core layer."," The recommended practice is for the core infrastructure to be in Layer 3."," The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer."," The Cisco Express Forwarding hashing algorithm is the default, based on the IP address and Layer 4 port."," Core layer should run BGP along with an IGP becauseiBGP has a lower administrative distance than any IGP."]
What are two steps that are taken when a router converts a voice signal from analog to digital form？（） [" sampling"," packetization"," quantization"," serializatio"]
对尽早诊断流感有价值的实验室检查包括取患者（）或 （）细胞学检测，或直接（）检测流感病毒抗原。
某项目进口一批工艺设备，抵岸价为1792.19万元，其银行财务费为4.25万元，外贸手续费18.9万元，关税税率为20%，增值税税率为17%，该设备无消费税，则该批进口设备的到岸价为（）万元。 ["1045","1260","1291.27","747.19"]
指出下列句子中通假字并说明意义。善！吾闻穷巷多怪，曲学多辨。
