【多选题】在工程计价中,下列属于规费内容的是( )。
【简答题】I discussed with Joan on the phone and then we decided to go by plane. After ______ Joan on the phone, we decided to go by plane.
【单选题】某种物质的LD50数值越大,那么该物质的毒性( )
【判断题】2-8.( )If an adult travels with three children shorter than 1.2 meters, he needs to buy one full-price ticket for himself and two half-price ones for the three children.
【单选题】对算法理解正确的是( )
B.
基本运算及规定的运算顺序构成的完整的解题步骤
【单选题】对算法的理解不正确的是( )
B.
一个算法中每一步都是明确可操作的 , 而不是模棱两可的
【单选题】某种物质的LD50数值越大,那么该物质的毒性
【单选题】麦芽糖在稀酸或酶的作用下,能水解成两分子( )。