信道编码是一种代码变换,主要解决数字通信的()问题,故又称作抗干扰编码。
参考答案:可靠性
水冷却器一般都是冷却水走(),被冷介质走()。
Wen Jiabao told the orphans in Wenchuan Earthquake not to cry.His words ____not
have calmed them instantly,but his concern about common people was obviously seen.
A.can
B.must
C.may
D.should