磁带记录器的主要缺点是（）。A.记录数据的误码率高 B.取数不方便。 C.记录速率/

患者男性，30岁。间断上腹痛2个月，多于饥饿时发生，餐后腹胀。发病以来，精神食欲好，体重无变化，大便正常。查体：浅表淋巴结无肿大，心肺未见异常，腹平软，上腹部压痛，未及包块，肝脾不大。

下一步的处理措施应选择（）（提示：患者服用H受体拮抗药及中药治疗后，症状完全缓解。追问病史：2年前因黑粪住院，胃镜诊断十二指肠溃疡出血。）

A.维持目前治疗8周

B.定期复查胃镜

C.根除幽门螺杆菌

D.检查血胃泌素

E.改用胃黏膜保护剂

F.停用口服药

（2013云南八地）能源、环境、材料与人类的生活息息相关．根据所学知识回答下列问题

（1）水是生命之源，保护水资源从我做起。

①电解水试验中，往水中加入少量氢氧化钠的目的是                 ，试验时若正极产生6ml气体，则负极产生气体的体         ml，该实验证明了水是由                     组成的。

②生活中常用               来降低水的硬度．如图所示是常用自制净水器，其中活性炭的作用是               ；制造塑料瓶的材料属于          材料。请介绍一种你的节水方法          。

（2）化石燃料是有限的，大量使用会导致环境污染，请你例举一种清洁能源          。

Graves病不正确的是（）

A.多发结节

B.复视

C.流泪

D.浸润型突眼

E.局限性粘液水肿

In the following passage, there are 25 blanks representing words that are missing from the context. You are to put back in each of the blanks with the missing word. Write your answers on the ANSWER SHEET. The time for this section is 25 minutes.
Compared with the immediate practical responsibility of the scientist, the (1) of the artist must seem puny. The decision which faces (2) is not one of practical action: of course he will try to throw this (3) into the scale, and that weight, if he is a writer or (4) a painter of genius, may have its effect. For the novelist—in our society the only artist who has a mass audience and at the same time effective economic control of the means of addressing (5) —the hope of some decisive influence is a reasonable (6) . For him, since he takes of all artists (7) is probably the largest portion of his culture as material, there is no (8) escape from the necessity for treating the content of his work seriously than (9) is for the social psychologist he is coming so closely to resemble. The dichotomy which people have tried to establish between artistic proficiency and (10) content is becoming unbearable to almost all sensitive minds. I doubt if it has ever been real— we might have admired Shelley as (11) if he had been indifferent to such things as war and tyranny, though I doubt it; certainly (12) he been indifferent we should never have been led by (13) .
There is no Hippocratic oath in literature, and I am not attempting to draw (14) up. As far as I am concerned, the artist is a human being writ large and his (15) are the ethics of any human being. Perhaps I can best illustrate (16) seems to me the new (17) of those duties of assertion and refusal from one writer, and I do not (18) it is without significance that this (19) projects the whole situation of choice into a scientific parable, the (20) of a pestilence: a (21) many human (22) are called to fight against, called not by any supernatural (23) but by the simple fact that the fight against a plague is (24) like a biological human (25) .

铆接时对铆钉的要求是什么？