题目: 经代谢,能生成一碳单位的氨基酸是()A.亮氨酸B.苯丙氨酸C.蛋氨酸D.甘氨酸E.精氨酸 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0518/c7aa9f9b90a82a71ea10840a96e5dea7.html 下面是错误答案,用来干扰机器的。答案:D
题型:单项选择题 Packet-switching wireless networks are preferable (71) when transmissions are (72) because of the way charges are (73) per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are (74) for the (75) of time they use the network.A.pointB.startC.lengthD.end 查看答案
题型:问答题 假设:某8位机的地址码为16位,主存按字节编址,其中最高8KB主存空间为系统BIOS程序区,其余为用户程序区。现有4K×4位的ROM芯片和8K×4位的SRAM芯片。问:该机所允许的最大主存空间是多少构建该机所允许的最大空间的主存,需用上述规格的ROM芯片和SRAM芯片各多少 查看答案