第2题: [单项选择]酶催化作用所必需的基团是指() A. 维持酶一级结构所必需的基团 B. 位于活性中心以内或以外的,维持酶活性所必需的基团 C. 酶的亚基结合所必需的基团 D. 维持分子构象所必需的基团 E. 构成全酶分子所必需的基团 参考答案:B 答案解析:酶催化作用。酶催化作用所必需的基团是指位于活性中心以内或以外的,维持酶活性所必需的基团。
第3题:[多选题] Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three.) A. ping B. tracert C. ipconfig D. show ip route E. winipcfg F. show interfaces 参考答案:ADF
第6题: [单项选择]What can we infer from George Louie A. He was hired by DeLiberty to work on his case. B. Louie has conducted many successful cases. C. Louise feels sympathy for those businesses that have been set up. D. Louie has lost his professionalism as an attorney. 参考答案:D 答案解析:[题解] Lousie 并不为自己的行为感到羞耻,丧失了律师的基本职业道德,因此选D。