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【单选题】
EDTA滴定Ca2+、Mg2+总量时,以EBT作指示剂,指示终点颜色的物质是
A.
Mg-EBT
B.
Ca-EBT
C.
EBT
D.
MgY
E.
CaY
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【简答题】四级词汇练习 1.With the _______of Mary, all the girl students are eager to go to the party. A.exhibition B.exception C.except D.reception 2.Although the trffic is not busy, he likes to drive at a _______ sp...
【单选题】设年名义利率r=10%,以季度为周期计息,则年有效利率ieff为( )。
A.
10.25%.
B.
10.46%.
C.
10.51%.
D.
10.38%.
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【单选题】- How does Jack usually go to work? - He drive a ca r, but now he there to lose weight .
A.
used to; is used to walk
B.
was used to; is used to walking
C.
was used to: is used to walk
D.
used to; is used to walking
【单选题】慢性胃炎的主要致病困素为
A.
消炎药物
B.
饮酒
C.
吸烟
D.
幽门螺杆菌
E.
胆汁反流
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A.
the total number of atomic sites
B.
Boltzmann's constant
C.
the absolute temperature in Kelvins
D.
the energy required for the formation of a vacancy
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A.
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B.
这一歌唱组合创作的高品质词曲,很难让人相信这是平均年龄仅20岁的作品。
C.
书法作品看上去是静止的,实际上它凝结着书法家的智慧和激荡的情感。
D.
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【简答题】用所给词的适当形式填空。 1. This was his _____ (two) time to cook. 2. It's hard for me_____ (drive)a car. 3.  Mark is a _____ (Russia) and he lives in  Russia all his life. 4. She doesn't have any _____ (hobby). ...
【多选题】Multiple choice. (5分) 1. He mustn’t ________ a car _________. A drives, dangerously     B drive, dangerous C drive, dangerously      D drives, dangerous 2. Look! The boy is standing against the wall _...
A.
can catch
B.
catches
C.
could catch
D.
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【单选题】若计息周期季利率为5%,则年名义利率为( )。
A.
5%
B.
10%
C.
15%
D.
20%
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