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【简答题】
试述中医学理论体系是如何形成的?
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举一反三
【单选题】Upon examination, we have found a _________ in quality.
A.
difference
B.
wrong
C.
discrepancy
D.
problem
【单选题】关于肺结核对妊娠的影响,下列哪项是错误的:
A.
肺结核患者除非同时患有生殖器结核,一般不影响受孕
B.
非活动性肺结核病变范围不大,对妊娠经过和胎儿发育影响不大
C.
活动性肺结核患者妊娠,可致流产、胎死宫内
D.
严重肺结核合并妊娠,围产儿死亡率可高达30%~40%
E.
结核病孕妇在产前不会将结核菌传给胎儿
【单选题】用万用表欧姆档测量电阻时,所选择的倍率档应使指针处于表盘( )
A.
起始段
B.
中间段
C.
末段
D.
任意段
【单选题】I found her eyes upon me sharply.
A.
fix
B.
fixing
C.
fixed
D.
to fix
【简答题】用精馏塔分离某二元混合物,已知进料量为120kmol/h,进料组成Z f =0.5,如果要求塔顶得到组成x D 不小于0.95的产品,则塔顶馏出液的最大流量为()kmol/h。
【简答题】Once upon a time, a man was walking on a mountain when he found an incredible cave with all kinds of treasure inside it. So he gave up his job, his home, and his friends, and spent all his time guardi...
【简答题】Upon waking up, Jim found himself lying on a stretch of sandy shore with his face half-buried in the sand.  He found, that his clothes had been almost torn apart.  His arms ached and his body was heav...
【单选题】用一连续精馏塔分离某二元理想混合物。已知进料量为100kmol/h,釜残液的流量为50kmol/h,提馏段的上升蒸汽量为150kmol/h,该精馏塔的操作回流比为2,则该精馏塔的进料为()。
A.
泡点进料
B.
露点进料
C.
冷液进料
D.
气液混合物进料
【单选题】用一连续精馏塔分离某二元理想混合物。已知进料量为100kmoL/h,釜残液的流量为50kmol/h,提馏段的上升蒸汽量为150kmol/h,该精馏塔的操作回流比为2,则该精馏塔的进料为 。
A.
泡点进料
B.
露点进料
C.
冷液进料
D.
气液混合物进料
【单选题】用一精馏塔分离某二元理想混合物,已知原料液的组成为0.5(易挥发组分的摩尔分数,下同),馏出液组成为0.95,釜残液组成为0.02,若进料量为100 kmol/h,则重组分的回收率为( )。
A.
92.39 %
B.
94.84 %
C.
97.94 %
D.
98.06 %
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