35=3:5=9:15=18:30=3÷5=9÷15.
故答案为:15,9,30..
He has a good ________ of French, which helps him a lot in the trade with the French.[ ]
A.skill
B.command
C.master
D.acquisition
一个3岁小儿,不规则低热,消瘦、盗汗、食欲下降,有痉挛性咳嗽,OT试验(+),X线示肺门淋巴结肿大,小儿可能患有
A.原发综合征
B.支气管淋巴结结核
C.急性粟粒性肺结核
D.结核性脑膜炎
E.干酪性肺炎