单项选择题
下列对于工程上对桁架描述正确的是
问答题 100Base-T中的Base表示[填空(1)] ;100表示[填空(2)] ;T表示[填空(3)] 。
问答题 The little boy is having a high____________.
多项选择题 In the one-dimensional steady-state heat conduction process of the cylinder wall, which one in the following statement is true?在圆筒壁的一维稳态热传导过程中,下列说法正确的是. ( )