干熄焦系统循环组分中可燃组分包括()。
A.氢气
B.二氧化碳
C.苯及其同系物
D.一氧化碳
参考答案:A, D
The boy named a price which was five times ________ he would have got for the fruit locally.
A.which
B.that
C.what
D.as
肾上腺皮质功能亢进者,尿中17-酮类固醇量_________。