皮皮学，免费搜题
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【单选题】
病毒性肺炎具有诊断价值的组织学特点是A.
肺间质中单核细胞、淋巴细胞浸润
B.
肺泡腔内浆液渗出
C.
肺泡上皮细胞增生
D.
胞浆内和胞核内出现包涵体
E.
细支气管上皮增生
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【单选题】设f(x)在x=a点可导，则|f(x)|在x=a不可导的一个充分条件是( )．
A.
f(a)=0，f'(a)=0
B.
f(a)=0,f'(a)≠0
C.
f(a)＞0，f'(a)＞0
D.
f(a)＜0，f'(a)＜0
【单选题】设函数f(x)在点x=a处可导，则甬数｜f(x)｜在点x=a处不可导的充分条件是( )．
A.
f(a)=0且f'(a)=0
B.
f(a)=0且f'(a)≠0
C.
f(a)>0且f'(a)>0
D.
f(a)<0且f'(a)<0
【单选题】The battle of Trenton was very important to Washington because______.
A.
it gave Washington the victory he needed
B.
it was his last battle as a general
C.
he defeated all the British soldiers
D.
it won the war for American independence
【单选题】Washington's greatness showed itself in that______.
A.
Washington worked under the Continental Congress
B.
Washington limited his role to being administrators of the laws
C.
Washington was both a great administrator and a great leader
D.
Washington established the precedent of the two-term Presidency
【简答题】引起硅酸盐水泥安定性不良的原因有哪些?各如何检验?建筑工程使用安定性不良的水泥有何危害?水泥安定性不合格怎么办?
【简答题】引起水泥安定性不良的原因有哪些?
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