问答题

通过学前特殊儿童教育，可降低由残疾所带来的儿童发展风险。

答案：正确。学前特殊儿童教育是指针对有发展障碍或特殊需要的儿童，在其学龄前阶段提供的一系列教育服务和支持。这些服务旨在帮助儿童...

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只要传信率R大于信道容量C，总存在一种信道码，并以所要求的任意小的差错概率实现可靠的通信。

答案：错误。这个说法是基于香农的信道编码定理，该定理指出，如果传信率R小于信道容量C，那么存在一种信道码，使得差错概率随着码长...

单项选择题

With the following information, please quote the unit price on CFRC3 and CIFC3 basis (in USD per set) respectively. Jiqing Export Company offered 400 dozen mens down jackets to an American company. The jackets were purchased at CNY 225 per piece (13% VAT included, tax refunded at the rate of 13%). The charges and expenses involved in the whole transaction included: Inland transport charge: CNY 1200 Commodity certification charge: CNY 200 Export clearance charge: CNY 100 Warehousing charge: CNY 500 Other charges: CNY 700 Ocean Freight: USD 1,020 from Qingdao to NEW YORK Commission: 5% of invoice value Insurance should be covered for 110% of the invoice value at the rate of 0.6%. The expected profit was 10% of the invoice value and the current foreign exchange rate is CNY 7.00/USD.

A.6%.
B.00/USD.