症见咽中如有物阻,咯吐不出,吞咽不下,胸胁满闷。治宜选用()
A.半夏厚朴汤
B.厚朴温中汤
C.越鞠丸
D.养阴清肺汤
E.枳实薤白桂枝汤
参考答案:A
Children develop language competence in their first language in a relatively short time merely by ______ it.
A. being exposed to B. speakingC. using D. listening to
能够预防铸件产生缩孔的措施是
A.降低铸型焙烧过程的升温速率B.熔模避开铸型的热中心C.包埋料调拌应严格按粉液比进行D.铸造完成后铸件应缓慢冷却E.合金不能过熔