题目内容
（请给出正确答案）
A．Teachers are not allowed to preach religious ideas.
B．Teachers are not allowed to present a negative picture of homosexuality.
C．Teachers are not allowed to present a positive picture of homosexuality.
D．Teachers are not allowed to present a negative picture of the government.
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更多“According to Section 28, the L…”相关的问题
A、colon
B、hyphen
C、comma
D、ellipsis
A、True
B、False
C、Not given
D、Not sure
Consider a LTE system with system bandwidth 20 MHz, Assume that each timeslot consists of 7 OFDM symbols. Each OFDM symbol is obtained by using 2048-point IFFT operation, and only 1200 mid-subcarriers are occupied by signals. if 16QAM modulation iand 2 transmit antennas are used in the downlink, evaluate the peak bit rate in the downlink. If the interspacing of adjacent subcarriers is 15 kHz, evaluate the total bandwidth for signals corresponding to 2048 subcarriers and the occupied bandwidth by signals corresponding to 1200 subcarriers. Explain why the signals do not occupy the whole bandwidth. If the interspacing of adjacent subcarriers is 15 kHz, evaluate the OFDM symbol period. If the interspacing of adjacent subcarriers is 15 kHz, evaluate the sampling rate in the IDFT/ IFFT operation and judge whether or not it satisfies the Nyquist's rule for sampling.
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