【判断题】The author uses hay mulch instead of the black plastic because the plastic is so ugly.
【单选题】Black plastic handles are often used on kitchen utensils because
A.
the plastic is a good insulator
B.
he plastic is a good conductor
C.
the black material is a good radiator
D.
the plastic softens gradually with excessive heat
【多选题】联合库存管理的实施策略有( )。
B.
发挥MRPII和DRP两种资源计划系统的作用
【单选题】Have you ever seen a__________bag on the table?
【简答题】柠檬黄在空胶囊制备时的作用是 A着色剂 B.避光剂 C.矫味剂 D.防腐剂A. 1 B. 1 C. 1 D. 1
【判断题】Mr. Black can not handle all of his customers.
【简答题】Why did the author give up the black plastic since it seemed to be working so well?