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【单选题】
关于植物水分含量的测定,下列说法错误的是——A.
含水量较高的新鲜果实、蔬菜等在高温条件下外部组织可形成干壳反而阻碍内部水分向外扩散，因此通常是在低温条件下慢慢烘干植物体内的水分。
B.
含加热易分解成分的样品，且挥发性成分含量较少的样品，可以采用减压加热干燥法测定。
C.
含有挥发性和干性油的样品可采用共沸蒸馏法测定。
D.
卡尔—费休滴定法是对专一的，最准确的测定物质水分含量的方法。
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举一反三
【单选题】The passage was most probably written ______.
A.
in 1982
B.
in 1958
C.
after 1958
D.
in 1957
【单选题】How many translation initiation factors in prokaryote?
A.
2 species
B.
3 species
C.
4 species
D.
5 species
E.
10 species
【单选题】The Monument to the People's Heroes, ____ from August 1952 to May 1958, was the first large-scale memorial built in New China. [ ]
A.
to be constructed
B.
constructed
C.
being constructed
D.
was constructed
【简答题】Translation: Many of my women friends have put a spark in their social lives by taking the initiative with men.
【单选题】在心率、前负荷和收缩力不变的情况下,増加心肌的后负荷,会使:
A.
等容收缩期延长,射血速度加快,每搏输出量增加
B.
等容收缩期延长,射血速度减慢,每搏输出量增加
C.
等容收缩期延长,射血速度减慢,每搏输出量减少
D.
等容收缩期缩短,射血速度加快,每搏输出量増加
E.
等容收缩期缩短,射血速度减慢,每搏输出量减少
F.
:C
G.
:单选题
H.
心室肌细胞静息电位是:
I.
因Na + 内流而产生
J.
因Ca 2+ 内流而产生 K. 因CL - 内流而产生 L. 因K + 内流而产生
【单选题】In 1958, people launched the first _____ satellite.
A.
Communications
B.
artificial Earth
C.
television
D.
telephone
【简答题】Translation Many people today want to do so many things within so little time. This sense of time might be called time urgency. It is a syndrome of behavior in which people continually try to accompli...
【简答题】Translation:Many people find the idea that “big brother is watching you” is more of a worry than a few motorists getting away with driving too fast.
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