问题
单项选择题
H-3的型号为FLB700-120-25/4,其中的“4”代表()。
A.设计序列号
B.壳程设计压力
C.管程数
D.材质的代号
答案
参考答案:C
H-3的型号为FLB700-120-25/4,其中的“4”代表()。
A.设计序列号
B.壳程设计压力
C.管程数
D.材质的代号
参考答案:C
完形填空。 | |||
Boy: Look! This is my mother. Girl: Wow! How beautiful. What does 1 do? Boy: 2 is a singer. Because she likes 3 . Girl: 4 does she work? Boy: She 5 in a big company. Girl: How 6 she go to work? Boy: She goes to work on 7 . Girl: What's her hobby? Boy: She likes listening to 8 .
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