A router with a serial interface will be used for an ISDN link.What other function group devices are required to complete the connection to the service provider? （） [" TE1"," TE2"," TA"," NT1"," NT2"]
考试焦虑的自我调适方法有哪些？
视觉随版面的中轴线上下移动，给人以直观、坚定的印象，称为（） ["直线视觉流程","横线视觉流程","斜式视觉流程","曲线视觉流程"]
下列文件格式中，属于文本文件格式的是（）。 ["DAT","RTF","JPG","MPEG"]
起重吊装作业中的钢丝绳与吊垂线的夹角一般不大于（） ["60°","65°","45°"]
简述文学欣赏的性质与作用
