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在Photoshop中绘制分类按钮或网页按钮图标时,为了保存背景的透明效果,需要将文件储存为____格式。A.JPGB.PNGC.SWFD.GIF

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The teachers of international students should try to _1_ misunderstandings and whenever possible be _2_ when they occur. And help the international students to develop new communication skills over time, which have to be developed through _3_ . This learning may be quite painful and the international student may feel under _4_ at times. In these circumstances, it is important for both international students and their teachers to try to understand the reason for the breakdown in communication.

常作为辨认椎骨序数的标志的是

A. 第3颈椎
B. 第7颈椎
C. 第4胸椎
D. 第7胸椎

不属于脊柱区分区的是

A. 项区
B. 胸段
C. 腰段
D. 颈前区

我国的________主要规定了关于数据电文、电子签名与认证及相关的法律责任

A. 《中华人民共和国宪法》
B. 《中华人民共和国网络空间安全法》
C. 《中华人民共和国电子签名法》
D. 《商用密码管理条例》