问题
单项选择题
SST机架显示07号错误时，仪器状态为（）。
A.出故障
B.正常工作
C.受磁干扰
D.探管损坏
答案
参考答案：B
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SST机架显示07号错误时，仪器状态为（）。
A.出故障
B.正常工作
C.受磁干扰
D.探管损坏
参考答案：B
Hello, I’m Tom. I’m a middle school student. It’s nice to meet you here. First, let me tell you _ 16 about my family. There are five people in my 17 . They are my mother, my father, my sister, my brother and I. My father is a worker. My mother is an English teacher. My sister is eighteen and my brother is sixteen. I’m fourteen. We 18 go to the same school. We all enjoy _19 football games. My_ 20 is in West Street. There is a big tree and some small trees around my house. The big one is a pear tree and the small ones are apple _ 21 . 22 there 23 any pears or apples on them now. 24 _ a photo of my house. In the photo, you can see three cats in my house. They are all black and white. We_ 25 them very much.
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