单模光纤用于计算机网络的短距离传输。

  Today more than 56 million Americans are attending a wide variety of schools and universities across the nation．One half of all the people in the country between the 小题1:  of 18 and 25 attend a university．Schools are expected to小题2:  the needs of every child regardless of his ability and also of society 小题3: （本身）．This means that tax-supported free education 小题4: ．（包括）courses in such subjects as sewing, typing, radio and automobile repairs as 小题5: as in the customary school subjects such as history and language．Students can choose among a. great variety of subjects 小题6:  （取决于）on their interests，future plans and level of ability．There are， 小题7: ，some basic courses that everyone is required to study，such as reading，writing，mathematics and English．During the 1800’s and early 1900’s，when millions of people 小题8:  many countries around the  w小题9:____ came to the United States to settle，schools were an i_ 小题10: part in“Americanizing”the children，and through them the parents，too．

女，40岁，下唇反复糜烂1年。活检标本见上皮表面过度正角化，粒层明显，角化层可有剥脱，有时见角质栓塞，上皮钉突增生、伸长，基底细胞发生液化变性，上皮与固有层之间可形成裂隙和小水疱，基底膜不清晰，上皮下结缔组织内有淋巴细胞、浆细胞浸润，血管周围PAS阳性类纤维蛋白沉积，管周淋巴细胞浸润。病理诊断应为

A．肉芽肿性唇炎
B．糜烂型扁平苔藓
C．慢性盘状红斑狼疮
D．非特异性肉芽肿
E．慢性唇炎

每个账户自助申请手机绑定，每天10次、申请解除手机绑定，每天10次。

形状公差包括有直线度、平面度、园度、线轮廓度。

5岁男孩，诊断为肾病综合征，用强地松10mg，qid，治疗18天，尿量正常，水肿减轻，尿蛋白转为阴性。

激素疗效属于（）

A.完全效应

B.部分效应

C.无效应

D.频繁反复

E.依赖