氟化物采样头滤膜

I have been very busy the last few days 这句话算什么时态?have been doing是现在完成进行时 have been done 应该是完成时的被动语态 那我上面这句话算什么呢?have been 有什么用法也帮我补充下 找孔子说的一句话大体意思是说的好像是随着年龄增长人知道的东西增多 开头是一十 二十 到七十就没了不要让我自己理会意思啊 帮我解释下意思啊 孔子说的一句话,是关于女子的,但不是“唯女子与小人难养也”,好像是女子...儒.就记得这一点,请大家帮帮忙. 请帮我解释一下孔子说的一句话 他说的:"吾十有五、三十“这些的年龄是按照阴历算的吗?特别是15这段 也就是说孔子那时应该是14才对 孔子说的一句话与"余音绕梁,三日不绝"的意思相符 The motor is started by piloting a relay with line 40,using an open contact如题,piloting a relay怎么翻译? CS中有些地图没法建出现couldn`t open valve/cs_bdog.wad 请问怎么解决?2位大哥啊 给个下载地址啊 我都找不到邮件我已经发给你了 The man can't find the _______ to the beach. I have a new dictiondry(改为一般疑问句) CS1.5地图as_tundra..建的时候出现WARNING;couldn't open valve/as_tundra.wad.那怎么办...急...要正确的办法.. 英语中从句怎么理解 Are the shoes________ you bought yesterday?A．whichB．whatC．thatD．the oneA为什么不选 英语中怎样理解从句 英语中从句是什么? 英语理解.从句.1）who,whom,that 这些词代替的先行词是人的名词或代词,在从句中所起作用如下：Is he the man who/that wants to see you?他就是你想见的人吗?（who/that在从句中作主语） He is the man whom/ tha 曾仕强点评三国之道 上下册怎么样 is、are、do、does填空When __________ you going to call the mechanic?_____ you have a bad cold?What ____ they going to do this evening? 用do,does,is和are填空1._________ your mother an English teacher?2._________ he do his homework at home?3.When ______ Mary watch TV in the evening?4._________ you want to go to a movie?5.What color _______ his English book?6.Where _______ his dict an is are do does填空.. 原形填空（用am,is,are,do,does填空）1.I___a mug.My mug (is) purple.2.You___three flags.Your flags (are0 gray.3.What ___their student doing?就三题,【括号里的,我填对了吗?】 The October Canton fair booth can rent or lease to the factory?什么意思 请问老师 I don't going to attend the canton fair , I will like to travel on 31St Mar 2008(Wuhan to Hang zhou)and back to Wuhan on 2nd Apr 2008.please surf web and give me ——an English Evening用take part in还是attend还是什么?为什么? 赛客的反义词要10个 反义词比赛公开（）笨重（）狭小（）谁的准确我把分给谁!不许抄别人的答案!否则就没分了 比赛的反义词是什么 力拔山兮气盖世,时不利兮骓不逝,骓不逝兮可奈何?虞兮虞兮奈若何! pads出现如下的错误:licensing error:the system date appears to have been set请问如何解决?以前也是那样装的,都用得好好的,现在重新装了系统就不行了,在桌面生成的图标里,打开电路图是正常的,但是在文 PADS打开时提示Licensing erroe the system data appears to have bee set back cannot continue这个错误请问是什么意思 Incorrect system date.Check the Date set on your computer. 这道英语题里,可以填Where I am there吗?在我们那里,我们对时间的要求很松散. ________ I am ______ , we are pretty relaxed about time.