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【判断题】
金属化合物具有复杂的晶体结构,熔点较高,硬度高,而脆性大的特点。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: Oh, Johnson, I want to talk to you. M: Hi, Jenny. What's up? W: I have this great job to manage a clothing store at the mall. M: So what's the problem? W: Well, one of my colleagues in my depa...
A.
She wants to share the good news with him.
B.
She wants to get some advice from him.
C.
She wants him to understand the matter.
D.
She is showing off.
【单选题】在U/C矩阵中，检验每个数据类列必须有一个C且至少有一个U，每个功能行必须有C或U的过程是（ ）[1分]
A.
完备性检验
B.
一致性检验
C.
无冗余性检验
D.
安全性检验
【简答题】When did the war break out between America colonies and England?The war broke out in ______.
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