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【单选题】
原子吸收分光光度计中,目前最常用的光源是( )。A.
火焰
B.
空心阴极灯
C.
氙灯
D.
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举一反三
【单选题】Techniques to employ the energy of the sun are being developed.
A.
convert
B.
store
C.
use
D.
receive
【单选题】Techniques to harness the energy of the sun are being developed.
A.
convert
B.
store
C.
utilize
D.
receive
【简答题】简述岩溶发育的基本条件 ?
【单选题】Of course, we didn't see the whole building. The part _________ the President lives and works is not open to the public. But the part we saw was beautiful.
A.
that
B.
where
C.
what
D.
which
【单选题】－－－________ do you think of the play we saw just now? －－－Wonderful! But not as interesting as the
A.
7. ---________ do you think of the play we saw just now? ---Wonderful! But not as interesting as the one we saw last Saturday. A．What
B.
How
C.
Why
D.
Where
【单选题】Ben did not ask for help, but when we saw how much work he had to do, we chose to___ him.
A.
examine
B.
imitate
C.
assist
【简答题】以公有制为主体，多种所有制共同发展是我国社会主义初级阶段的基本经济制度，公有制的主体地位主要体现在(). A公有资产在社会总资产中占优势 B.国有经济控制国民经济命脉，对经济发展起主导作用 C每一个地方和每一个产业的公有资产都要占优势 D.公有资产不仅要有量的优势更要注重质的提高
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