风机的故障现象有哪些？

按照采购控制程序的规定，在采购合同招标前，由项目部提交采购项目的工作说明书（SOW）。某项目按计划要采购一批笔记本电脑，项目经理给采购部提交了采购文件，主要内容有数量、配置、性能和交货日期。以下叙述正确的是（57）。

A．项目经理提交的采购文件不是 SOW

B．该采购文件是 SOW，如果符合文件规定和流程，采购部可接受

C．只要是项目经理给的采购文件，采购部就可以接受

D．只有在项目外包时才有采购工作说明书，物品采购可以不产生 SOW

All     is needed is a Supply of oil．

A．the thing

B．that

C．what

D．which

糖尿病眼部并发症不包括()

A．黄斑病

B．应用胰岛素治疗后可出现一过性视力模糊

C．虹膜睫状体病变

D．眼球突出

E．糖尿病视网膜病变

梨园曾是哪一个皇帝教练歌舞艺人的地方？

Strange things have been happening to England. Still (1) from the dissolution of the empire in the years (2) World War Ⅱ, now the English find they are not even British. As the cherished "United Kingdom" breaks into its (3) parts, Scots are clearly (4) and the Welsh, Welsh. But who exactly are the English What’s left of them, with everything but the (5) half of their island taken away

Going back in time to (6) roots doesn’t help. First came the Celts, then the Romans, then Angles, Saxons, Jutes, Danes. Invasion after invasion, until the Norman Conquest. English national identity only seemed to find its (7) later, on the shifting sands of expansionism, from Elizabethan times onwards. The empire seemed to seal it. But now there’s just England, (8) of a green island in the northern seas, lashed by rain, scarred by two (9) of vicious industrialization fallen (10) dereliction, ruined, as D．H. Lawrence thought, by "the tragedy of ugliness," its abominable architecture.

Of all English institutions, the one to (11) on would surely be the pub. Shelter to Chaucer’s pilgrims, home to Falstaff and Hal, throne of felicity to Dr. Johnson, the pub- that smoky, yeasty den of jollity-is the womb of (12) , if anywhere is. Yet in the midst of this national (13) crisis, the pub, the mainstay of English life, a staff driven (14) into the sump of history, (15) as the Saxons, is suddenly dying and evolving at (16) rates. Closing at something like a rate of more than three a day, pubs have become (17) enough that for the first time since the Domesday Book, more than half the villages in England no longer have one. It’s a rare pub that still (18) , or even limps on, by being what it was (19) to be: a drinking establishment. The old (20) of a pub as a place for a "session," a lengthy, restful, increasingly tipsy evening of swigging, is all but defunct.

17（）

A.enough

B.scarce

C.cheap

D.popular