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城镇燃气输配工程施工及验收规范规定:热熔连接的焊接接头连接完成后,100%外观检验及10%翻边切除检验,并应符合国家现行标准《聚乙烯燃气管道工程技术规程》CJJ 63 的要求。符合CJJ 63中对翻边切除检查要求的有( )
A.
翻是实心的和圆滑的,根部较宽
B.
翻侧不应有杂质、小孔、扭曲和损坏
C.
每隔几厘米进行后弯试验,不应有裂纹,接缝处肉眼看不见连接线
D.
每出现一道不合格焊缝,则应加倍抽检该焊工所焊的同一批焊缝,按本规程进行检验
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【单选题】Capillaries are _______ blood vessels through which oxygen, nutrients and waste products are exchanged throughout the body.
A.
minute
B.
fragile
C.
blocked
D.
wide
【多选题】About fenestrated capillaries, which are right( )
A.
The nuclear-free part of endothelial cells has many fenestrations through cells
B.
A fenestration may have a thin, nonmembranous diaphragm across its opening
C.
basal lamina of endothelial cells is discontinous
D.
There is a gap between endothelial cells
E.
Capillaries with the strongest permeability
【多选题】The reasons for the high permeability of new capillaries are as follows
A.
Small neocapillary lumen
B.
Incomplete basement membrane
C.
Large endothelial cell gap
D.
Small endothelial cell gap
E.
Capillaries anastomose to form loops
【单选题】Under the electron microscope, the pathological characteristics of diffuse proliferative glomerulonephritis in capillaries are as follows ( )
A.
Dense deposits under endothelial cells
B.
Hump like dense sediment on the epithelial side
C.
Podocyte fusion of visceral epithelium
D.
Severe defect of capillary basement membrane
E.
Dense deposits in the basement membrane of capillaries
【多选题】About capillaries, which are right( )
A.
There are tight junctions between endothelial cells of continuous capillaries
B.
There are holes between endothelial cells with fenestrated capillaries and basement membrane
C.
Sinusoid have large gap between endothelial cells
D.
The endothelium of fenestrated capillaries is continuous and the basement membrane is complete
E.
Red blood cells can pass through endothelial cell fenestration
【多选题】What changes took place in England when William the Conqueror ruled the country?
A.
He took almost all the land away from the Saxons and gave it to his followers.
B.
He established a strong Norman government.
C.
Relations between England and European Continent were opened.
D.
Norman French culture blossomed in England.
【单选题】直流电动机拖动负载运行时的能量损耗不包括()
A.
空载损耗
B.
涡流损耗
C.
铁芯损耗
D.
机械损耗
【单选题】电动机的有功功率损耗包括( )、铁芯损耗、杂散损耗和机械损耗。
A.
铜损耗
B.
固定损耗
C.
可变损耗
D.
涡流损耗
【单选题】Which statement is NOT true about this conversation?
A.
It took place on Sunday.
B.
It took place between two classmates.
C.
It took place in the evening.
D.
It is about asking for a favor.
【简答题】What changes took place in English society in the 16the century?
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