By referring to Dietls book, the author intends to show______.
A. Bo"s intelligence
B. Richard"s charm
C. Mr. Dietl"s fame
D. Mr. Dietl"s authority
查看答案
According to the Spanish researchers, which of the following statements is true？
A. The closer you are to a mobile phone, the greater your exposure to electromagnetic radiation.
B. The closer you are to a mobile phone that is being used to send and receive signals, the greater your exposure to electromagnetic radiation.
C. The amount of electromagnetic radiation reflected by metal is almost too small to be measured.
D. You shouldn"t stand close to people who are using their mobile phones in train carriages, buses, and lifts.
一位8421BCD码译码器的数据输入线与译码输出线的组合是4：10。()
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