GB/T9445—2005标准规定,2级无损检测人员应能根据法规、标准和规范、解释和评定()。
参考答案:检测结果
改错。
( ) 1. How many book do you have? __________________
A B C
( ) 2. They worked very hardly. __________________
( ) 3. The ice in the north will start to becoming water. __________________
( ) 4. You mustn't is late for school. __________________
( ) 5. Standing over there, please. __________________
抗原刺激机体不可能产生的是()。
A.抗体
B.补体
C.细胞因子
D.致敏淋巴细胞
E.淋巴因子