新能源技术认证等级分为几个级别（） A: EIP B: HVT C: HVE D: HVBR

这段话里哪些句子是定语从句，请将序号填在空里。（只填写阿拉伯数字，中间用逗号隔开，例如：1,2,3）Chris: Do you have a date for the party yet?Kim: Actually, I don't. (1) Do you think you could help me find one?Chris: Hmm. What kind of guys do you like?Kim: Oh, I like guys (2) who aren't too serious and (3) who have a good sense ofhumor. You know... like you.Chris: Ok. What else?Kim: Well, I'd prefer someone (4) who I hve somthing in common with - （5）who Ican talk to easily.Chris: I think (6) I know just the guy for you. Bob Branson. Do you know him?Kim: No, I don't think so.Chris: Let me arrange for you to meet him, and you can tell me (7) what youthink.