何谓产后发热？最常见的证型是什么？相当于西医学的什么病？

地中海贫血是我国南方最常见的遗传性血液疾病之一，为了解南方某城市人群中地中海贫血的发病情况，某研究小组对该城市的68000人进行了调查，调查结果如表1、表2。下列说法正确的是

A．根据调查能确定该遗传病为隐性遗传病

B．经产前诊断筛选性别，可减少地中海贫血的发生

C．地中海贫血的发病率与年龄无直接的关系

D．患者经基因治疗，不会将致病基因遗传给后代

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卷标号为16—25的相应位置上。

One of the many things we take for granted in the twentieth century is the speedy collection and delivery of letters to and from all parts of the world at ___小题1:____ ( astonish ) cheap rates.

A husband away __小题2:__ a business trip can write home to his wife two thousand miles away knowing that the letter will reach __小题3:___ in a few days. His special airletter may cost him less than a loaf of bread __小题4:__ his own bus fare to work.

This service, however, is a favor of comparatively recent origin. Until modern times, the cost of sending letters privately was so great that the __小题5:___ ( arrive ) of a letter was a considerable event and might even cost financial hardship to the receiver ___小题6:___ had to bear the charges.  __小题7:___ the Middle Ages on，there were indeed special messengers ___小题8:___ ( carry ) state correspondence, and other messengers employed to travel with between the great monasteries or the great merchants’ houses, but for centuries there was no official post service by which private letters could be sent. It was not until 1840 ___小题9:___ the official organization known as the Penny Post __小题10:__ ( establish ) in Great Britain and gave ordinary people cheap and efficient postal deliveries.

Light-to-moderate smokers were ________ to die of sudden heart problems than those who had never smoked.

A．as twice likely

B．twice more possible

C．twice more likely

D．as twice possible

污染不严重时，采用（）冲洗运转，可在其中加4%的冲洗添加剂，运转1～2h后，采样分析合格，再用工作油或同一粘度级的油，进行冲洗运转一次。

A.油

B.工作油

C.同粘度级的油

D.水

建设工程组织流程施工时，用来表达流水施工在空间布置上开展状态的参数有()。

A．施工过程和流水强度

B．流水节拍和流水步距

C．工作面和施工段

D．成倍节拍和流水节奏