管汇焊接时宜选用哪些控制焊接变形的方法？

With the spread of inter-active electronic media a man alone in his own home will never have been so well placed to fill the inexplicable mental space between cradle and crematorium. So I suspect that books will be pushed more and more into those moments of travel or difficult defecation (1) people still don’t quite know what to do with.

When people do read, I think they’ll want to feel they are reading literature, or (2) something serious. (3) you’re going to find fewer books presenting themselves as no- nonsense and (4) assuming literary pretensions and being packaged as works of art. We can expect an extraordinary variety of genre, but with an underlying (5) of sentiment and vision.

Translators can only (6) from this desire for the presumably sophisticated. We can look forward to lots of difficult names and fantastic stories of foreign parts enthusiastically (7) by the overall worship of the "global village" Much of this will be awful and some wonderful, (8) don’t expect the press or the organizers of prizes to offer you much help in making the appropriate distinctions. They will be chiefly (9) in creating celebrity, the greatest enemy of discrimination, but a good prop for the (10) consumer.

Every ethnic grouping over the world will have to be seen to have a great writer--a phenomenon that will (11) a new kind of provincialism, more chronological than geographic, (12) only the strictly contemporary is talked about and (13) . Universities, including Cambridge, will include (14) their literature syllabus novels written only last year. (15) occasional exhumation for the Nobel, the achievements of ten or only five years ago will be largely forgotten.

In short, you can’t go too far wrong when predicting more of the same. But there is a (16) side to this--the inevitable reaction against it. The practical things I would like to see happen--publishers seeking less to (17) celebrity through extravagant advertising, (18) and magazines (19) space to reflective pieces--are rather more improbable than the Second Coming (耶稣复临). But dullness never quite darkens the whole planet. In their own idiosyncratic fashion a few writers will (20) be looking for new departures.

6（）

A.benefit

B.derive

C.differ

D.deviate

实验室的设计应当确保其适用于预定的用途，并能够避免（）和（），应当有足够的区域用于（）、留样和（）的存放以及（）。

保护知识产权，要从公民自身做起。这是因为( )

A．公民意识是社会主义民主政治的核心

B．公民与国家的关系是和谐统一的新型关系

C．公开透明有利于实现公民的知情权和监督权

D．公民意识的强弱，直接影响依法治国的进程

关于卵巢肿瘤蒂扭转哪种说法是错误的：

A．典型症状为突发一侧下腹剧痛伴恶心、呕吐

B．妇科检查瘤体部压痛最明显

C．有时扭转可自然复位

D．肿瘤扭转时间长可继发破裂与感染

E．一经确诊即开腹手术

现有一包铝热剂是铝粉和氧化铁粉末的混合物，在高温下使之充分反应，将反应后的固体分为两等份，进行如下实验（计算pH时假定溶液体积没有变化）：

①向其中一份固体中加入100mL 2．0mol·L^－1的NaOH溶液，加热使其充分反应后过滤，测得滤液的pH＝14；

②向另一份固体中加入100mL 4．0 mol·L^－1的HCl溶液，使固体全部溶解，测得反应后所得溶液中只有H⁺、Fe²⁺和Al³⁺三种阳离子且pH=1。

则②产生气体的体积（标准状况）为（   ）

A．2．352L

B．2．448L

C．2．688L

D．2．856L