高压管线的密封垫应做（）。
A.磁粉探伤
B.着色探伤
C.硬度测定
D.光谱分析
参考答案：C
用适当的代词填空。
1. Don't put your clothes here, put away, please.
2. This isn't my skirt, is orange.
3. I can't carry the desk. is too heavy.
4. "Give some bananas." Which ones are theirs?
5. "Is this your sock?" "Let see. Oh, yes."
甲状腺血流显像的临床意义如何?
