国家测绘地理信息局主要职责（） ["起草测绘法律法规","负责国界线测绘","起草测绘地理信息地方性法规","负责外国组织或者个人来华从事测绘地理信息活动的初审","负责国界线测绘"]
正弦交流电是随时间按照正弦函数规律变化的（）。 ["电阻","电压","电流","电压和电流"]
课外活动是中小学为实现学校教育目的，在（）以外对学生身心实施多种影响的（）活动。
Several @functions can execute multiple statements. Which one of the following initializes a variable and can increment in during the operation?（） [" @do "," @for "," @while "," @dowhile&e"]
在剥防腐层作业时，要根据防腐层的（）不同采用不同的剥离方法。 ["形状","性质","种类","特点"]
好氧生物处理
