工艺联锁试验必须采用带物料试验。()
参考答案:错
解析:工艺联锁试验尽可能采用带物料试验,对于因工艺或设备原因不允许带物料试验的联锁回路,将采用模拟试验的方法进行。
按要求写句子。
用so连接两个句子。
1. I got up at nine o'clock this morning. I was late for my class.
__________________________________________________
2. I was ill yesterday. I went to hospital.
用then连接两个句子。
3. I put on my clothes. 1 washed my face.
4. I read English.I studied Chinese.
(2013·辽宁,22)He was unhappy when he sold his guitar.After all,he________it for a very long time.
A.has had
B.had had
C.has
D.had