This machine, _____ for many years, is s

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问题选择题

This machine, _____ for many years, is still working perfectly. [ ]

A. after which I have looked

B. which I have looked after

C. that I have looked after

D. I have looked after

答案

答案：B

单项选择题

一足月新生儿，生后2d，一般状态良好，但其网织红细胞5％，血涂片可见大量的有核红细胞和少量幼稚中性粒细胞，此情况表示（）

A.先天性营养性贫血

B.髓外造血

C.正常血象

D.先天性小儿白血病

E.新生儿溶血病

单项选择题

以下哪个战例是成功地应用运筹思想而取胜的（）。

A.安史之乱

B.马嵬坡之变

C.马陵之战

D.甲午战争