化学粘合加固法有哪些?
参考答案:浸渍法、喷洒法、泡沫法、印花法、溶剂粘合法。
设有如下关系表:
则下列操作中正确的是()
A.T-R∩S
B.T=R∪S
C.T=R×S
D.T=R/S
——How about your new school?
——I couldn’t feel _____ about it. All my teachers are very kind and helpful.
A.better
B.worse
C.best
D.worst