氯氰菊酯原药外观是怎样的?
参考答案:黄色至褐色粘稠状液体或有结晶的半固体,无可见外来杂质。
He focused on his test papers, ________never ________ the same mistakes.[ ]
A.determined; to repeat
B.being determined; to repeat
C.determined; repeating
D.determining; repeating
涉外行政案件中,对外国人国籍的确认,以其入境时有效证件上所表明的国籍为准。