打击与防范是公安机关维护社会治安秩序和社会稳定的两手，二者互相补充，互相兼容。 ( )
参考答案：对
Black-box and white-box testing method ale often used in software testing phase, in which, the white-box is mainly used to test software's (73) .
A．external function of a program
B．reasonableness of structure
C．internal logic of a program
D．correctness of a program
皮肌炎的特异性抗体是（）
A.抗组蛋白抗体
B.抗Sm抗体
C.抗SS-B抗体
D.抗Scl-70抗体
E.抗Jo-1抗体
