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【单选题】
外窗窗口气密性能检测时用到的环境温度检测仪的不确定度不应大于()。A.
1℃
B.
2℃
C.
3℃
D.
4℃
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举一反三
【单选题】I'm Kate Green. My ______ name is Kate. My ______ name is Green. [ ]
A.
family; first
B.
first; family
C.
family; given
【单选题】在 α粒子散射实验中,若把α粒子换成质子,要想得到α粒子相同角分布,在散射物不变条件下则必须使
A.
质子速度与α粒子的相同
B.
质子能量与α 粒子的相同
C.
质子速度是α粒子的一半
D.
质子能量是α粒子的一半
【单选题】I'm Bob Miller.Bob is my_____.Miller is my_____. [ ]
A.
last name;family name
B.
first name;family name
C.
family name;first name
D.
family name;last name
【简答题】I have a happy family. It’s not very big. There are three people in my family. They are my father, my mother and I. My father is tall with big eyes. He is a bus driver. My mother is short with long ha...
【简答题】Thi s is my family tree. My name is Bruce. I'm English. I have a big family. My wife, Allen, is a teacher. We have two children. Dick is my son. Linda is my daughter. They are students in No. 2 High S...
【简答题】Hello! This is my family. I’m David Green. I’m from England. My family is in Beijing. My father and mother work here. My father is a doctor and my mother is a teacher. I have a sister but no brothers....
【简答题】阅读理解。 Hello! This is my family. I'm David Green. I'm from England. My family is in Beijing. My father and mother work here. My father is a doctor and my mother is a teacher. I have a sister but no bro...
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