皮皮学，免费搜题
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【单选题】
患者,男,17岁,以阴囊瘙痒,嘴角反复糜烂,嘴唇红、痒、脱屑、起皮反复发作2年余到医院皮肤科门诊就诊。患者述冬春季节症状加重,阴囊炎和口角炎在其他医院治疗,但效果不佳,久治不愈。从营养学角度考虑可能是由于缺乏什么引起?A.
维生素B1
B.
维生素B2
C.
维生素A
D.
维生素PP
E.
维生素D
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皮皮学刷刷变学霸
举一反三
【单选题】“当商品经济发展到一定阶段,出现巨型垄断性生产企业,而零售企业仍然数量众多、规模较小,具有充分的竞争性。”上述描述是那种类型供应链为主体的背景条件。
A.
供应商
B.
生产商
C.
批发商
D.
零售商
【单选题】重症病毒性肝炎患者出血倾向最重要的原因是（）
A.
骨髓造血功能障碍，血小板减少
B.
凝血因子合成障碍
C.
毛细血管脆性增加
D.
Ⅹ、Ⅻ因子减少
E.
维生素K吸收障碍
【单选题】重症病毒性肝炎患者出血倾向最重要的原因是
A.
骨髓造血功能障碍，血小板减少
B.
凝血因子合成障碍
C.
毛细血管脆性增加
D.
.X、XII因子减少
E.
维生素K吸收障碍
【单选题】Petroleum products, such as gasoline, kerosine, home heating oil, residual fuel oil, and lubricating oil, all come from one source — crude oil found below the earth' s surface, as well as under large ...
A.
Crude oil is found below land and water.
B.
Crude oil is always found a few hundred feet below the surface.
C.
Pumping and pressure force crude oil to the surface.
D.
A variety of petroleum products is obtained from crude oil.
【单选题】Petroleum products, such as gasoline, kerosine, home heating oil, residual fuel oil, and lubricating oil, all come from one source -- crude oil found below the earth' s surface, as well as under large...
A.
Crude oil is found below land and water.
B.
Crude oil is always found a few hundred feet below the surface.
C.
Pumping and pressure force crude oil to the surface.
D.
A variety of petroleum products is obtained from crude oil.
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