行扫描逆程传送的信号有() ["A、Y信号","B、C信号","C、色同步信号 ","D、复合同步信号与复合消隐信号"]
肝脏经()循环将有毒的氨转变成无毒的(),这一过程是在肝细胞的()和()中进行的。
兼容制彩色电视广播传送的三个信号是() ["A、RGB","B、R-Y,B-Y,G-Y","C、Y,R-Y,B-Y","D、Y,R-Y,G-Y"]
G-Y色差信号用()还原。 ["A、R-Y与Y信号相加","B、B-Y与Y信号相加","C、R-Y与B-Y信号相加","D、R与B信号相加"]
体内主要的转氨酶是()和(),其辅酶是()。
营养必需氨基酸是()。