2001年我国有()个省份淡水鱼产量超过100万吨? ["3个","5个","7个","9个"]
常用的人格测验量表为() ["洛夏墨迹测验","主题统觉测验","比奈--西蒙量表","90项症状检查表","H-R成套测验"]
在有感染的肉芽创面上植皮,宜选用() ["表层皮片","全厚皮片","薄中厚皮片","厚中厚皮片","保存真皮下血管网的全厚皮片"]
由于分析人员的操作习惯变化而造成的误差属于以下哪种误差() ["系统误差","随机误差","过失误差","比例系统误差","恒定系统误差"]
135.134.1.1属于()类网络地址。 ["A","B","C","D"]
按照构建网站的主体,网站可以划分为哪几个基本类型?