【单选题】( )都是非常典型的戏剧性光效,更多出现在舞台戏剧照明中,而在人像拍摄中很少使用。
【单选题】在计算期内,每年年末发生的方向相同、大小成等差关系变化的现金流量序列叫做( )。
【单选题】水难溶性药物或注射后要求延长药效作用的固体药物,可制成注射剂的类型是
【判断题】(3) 稀疏矩阵压缩存储后,必会失去随机存取功能。
【单选题】Which of the following is NOT an argument teachers and principals use to advocate calculator use in the classroom?
A.
Teachers need not waste time on basic arithmetic.
B.
Calculators are cheap, handy and accurate.
C.
Calculators help children learn faster in more advanced arithmetic.
D.
Teachers only allow students to use calculators on the most difficult math problems.
【单选题】在工作区1中已打开数据库CGE.DBF,则在工作区2再次打开操作是( )。