【多选题】有机涂料依其主要成膜物质与稀释剂不同,有:(BCD)。
【单选题】What suggestion does the author make in order to grasp this opportunity?
A.
Search for new energy sources.
B.
Forbid motor transportation.
C.
Accept a new life style.
D.
Adopt a new form. of invention.
【单选题】前照灯近光灯丝损坏,会造成前照灯( ) 。
【多选题】有机涂料依其主要成膜物质与稀释剂不同,有:()。
【单选题】科目编码结构为4-2-2-2,正确的说法是( )
【简答题】自然连接运算由笛卡尔积, ________ 和 ________ 操作组合而成的。
【单选题】前照灯近光灯丝损坏,会造成前照灯( )。
【单选题】what suggestion does the author offer to parents?
A.
Rethinking the value of higher education.
B.
Investing wisely in their childrens education.
C.
Helping their children to bring their talent into full play.
D.
Avoiding too much intervention in their childrens education.
【单选题】科目编码结构为4-2-2-2,正确的说法是( ).