【单选题】男性农民,50岁。有痔疮史20年,近1年头晕、乏力,面色苍白就诊。体检:重度贫血貌:皮肤干燥、反甲、患者不同意进行任何检查,要求给予药物治疗。医生给予铁剂试验性治疗。关于试验性治疗说法哪项是错误的()
A.
口服铁剂1周后网织红细胞明显上升,随后又降至正常
B.
网织红细胞上升平均为0.06-0.08(6%-8%),范围0.02-0.16(2%-16%)
【判断题】反向放大器容易做到输入电阻很大。 ( )
【单选题】下列细胞中具有自我复制能力和多向分化的细胞是什么
【单选题】下列细胞中具有自我复制能力和多向分化的细胞是什么?
【单选题】在 NH 3 的水解平衡 NH 3 +H 2 O NH 4 + +OH - 中,为了使 [OH - ] 增大,可行的办法是:
【单选题】IV型超敏反应可经过下列哪一种成分被动转移
【单选题】All these problems will be discussed at the meeting ______ next Tuesday.
【单选题】已知i1=10sin (314t-900)A,i2=10sin(628t-300)A,则( )。
【单选题】下列细胞中具有自我复制能力和多向分化的细胞是
【单选题】Which of the following are mentioned in Paragraph 5 as being problems in the present sys- tem?
A.
Prices are too high and capacity too low.
B.
Change is being stopped by vested interests.
C.
Politics are preventing reform. in some countries.
D.
Risk is decreasing by keeping the present system.