【多选题】对于矿物颜色命名与描述方法,下列描述正确的有:
A.
金属色要加用金属的名称作为前缀,如铜红色、锡白色、铅灰色等;
C.
可用复合词区分矿物颜色的色调、深浅、浓淡等;
【单选题】假如客户分类编码规则为“*”则最多可以输入( )大类客户?
【简答题】用括号内单词的适当形式填空。 1. This society is trying to help to 8ave animals in _____ (erous). 2. Several people made ______ (speak) at the meeting this morning. 3. Paul will travel to Qingdao instead of ____...
【简答题】用括号内单词的适当形式填空 1. Look! Some children (lie) on the beach 2. Thank you for____(join) our show. 3. Look at the little dog (lie) on the grass. 4. We have different kinds of (scarf). 5. We're____(surprise...
【简答题】阅读短文,用括号内单词的适当形式填空。 Last Sunday the elephant keeper at London Zoo, Jim Robson, 小题1: (kill) by one of the elephants he loved. This was terrible, and it could be a big problem for the future of London Z...
【单选题】求 z = x 2 + 2 xy + y 2 在点(1 , 2) 处关于y的偏导数 .
【简答题】用括号内单词的适当形式填空完成句子。 1. Yesterday they _ _ (have) an English lunch. 2. She says English food (be) delicious. 3. What did you _ (have) last night? 4. She had a bowl of _ (noodle). 5. Did you have (sandwi...
【简答题】用括号内单词的适当形式填空。 1. I'm (come). 2. My little brother (watch) TV every day. 3. Thanks for (teach) us English. 4. We (play) football yesterday. 5. There are many (bus) in the street. 6. What (do) the girl...
【简答题】设函数 (1)试求 的偏导函数; (2)考察偏导函数在点 处是否连续.