结核菌素试验常用于检测机体的______,其反应原理为______。
参考答案:细胞免疫功能 Ⅳ型超敏反应
----Could I have a look at your new bicycle?
----Sorry, I ________ it to Alice. She _______ to borrow it this morning.
A.have lent; came
B.lend; was coming
C.had lent; came
D.have lent; will come
下列各项属于减少固定基金的业务有()。
A.对外捐赠固定资产
B.盘亏固定资产
C.出售固定资产
D.报废固定资产