According to the Chemical Data Guide,which reactive group(s) is/are not compatible with the products polybutene and o-xylene? ()
- ANitric acid
- BAmides
- CAlcohols,glycols
- DPhenols,cresol
According to the Chemical Data Guide,which reactive group(s) is/are not compatible with the products polybutene and o-xylene? ()
1、According to the Chemical Data Guide,1
According to the Chemical Data Guide,1,3 - pentadiene possesses which characteristic? ()AColorless liquid,mild aromatic odorBPale yellow liquid,strong odorCColorless liquid,faint odorDStraw-colored liquid,sweet-odor
2、According to the Chemical Data Guide,e
According to the Chemical Data Guide,epichlorohydrin is a(n)().AcorrosiveBclass B poisonCoxidizerDexplosive
3、The signal to guide vessels in distres
The signal to guide vessels in distress,which indicates,“This is the best place to land” is the().Ahorizontal motion of a white flagBletter K in Morse code given by lightCcode flag S as a hoistDfiring of a white star signal
4、The problem, according to the experts,
The problem, according to the experts, is () we should do with the salty land.AwhatBwhetherChowDthat
5、The guide shoes are secured to the cro
The guide shoes are secured to the crosshead by means of()Athrough boltsBend chock boltsCside chock boltsDtap-bolt
6、According to the passage, the suburbs
According to the passage, the suburbs ______.A were deserted at nightB became larger and largerC had a high construction costD had some declined business center