YG8_爱下问搜题

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问题名词解释

YG8

答案

参考答案：

钨钴类硬质合金，含钴量8%左右。

选择题

They ______ on the program for almost one week before I joined them, and now we _______ on it as no good results have come out so far.

A. had been working; are still working
B. had worked; were still working
C. have been working; have worked
D. have worked; are still working

单项选择题 A1型题

下列关于蜂窝织炎的叙述正确的是（）

A.常由草绿色链球菌感染引起

B.常见部位是内脏器官、肌肉和阑尾

C.病变特点与链球菌分泌的链激酶和透明质酸酶有关

D.细菌不容易经组织间隙、淋巴管和血道蔓延扩散

E.常有明显的组织坏死和脓肿形成