理想的目标录取应当包括目标初始位置数据以及目标初始特征参数。
参考答案：对
____ in the 1800s and first mass-produced in Germany, the harmonica (口琴) was designed to play simple
folk tunes. [ ]
A. Being invented
B. Inventing
C. Invented
D. Having invented
以下属于人体特异性免疫功能的是
A．皮肤的屏障作用
B．白细胞的吞噬作用
C．唾液中溶菌酶的杀菌作用
D．水痘抗体对水痘病毒的作用
