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【单选题】
-Would you like to sing a song for us? -_____.A.
I prefer not
B.
I prefer not to
C.
I prefer to not
D.
I wouldn't prefer
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举一反三
【单选题】This year I _____Thanksgiving cards to the volunteers.
A.
sent out
B.
sent up
C.
sent round
D.
sent away
【简答题】125I的半衰期为______,衰变方式__________,检测方法___________
【单选题】Which mosquitoes are primary vectors of malaria?
A.
a. Male Anopheles
B.
b. Female Anopheles
C.
c. Male Aedes
D.
d. Female Aedes
【单选题】用HCl标准溶液测定硼砂(Na 2 B 4 O 7 ·10H 2 O)试剂的纯度,有时会出现含量超过100%的情况,可能的原因是
A.
试剂不纯
B.
试剂吸水
C.
试剂失水
D.
试剂吸收杂质
【简答题】中英文互译。 (1)SMT ______ (2)THT_____ (3)印制电路板_____ (4)表面组装印制板____
【单选题】I was 8 years old when my father was 31. This year my father is twice my age. How old am I?
A.
21
B.
22
C.
23
D.
24
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