【简答题】连一连。 ①个位是5 65 ②个位和十位相同 49 ③4个十和9个一 77
【简答题】It was my father's wish in his will that I ________ become a doctor. A) should B) would C) might D) could
【单选题】设 A 为 【图片】 矩阵, 则 【图片】 为正定矩阵的充分必要条件是 r(A) = _________.
【单选题】采用补码表示的8位二进制数真值范围是 ___________ 。
【简答题】设A是【图片】矩阵,r(A)=2,B是【图片】矩阵,B的列向量是Ax=0的解,则r(B)的最大值为________。
【单选题】德意志第三帝国之前的独裁与希特勒时期的独裁的根本不同之处在于:()。
【单选题】听力原文:M: Who came up with the idea of Father's Day? W: Her name was Sonora Louise Smart Dodd and she lived in Spokane, Washington. Sonora was the oldest of six children raised by their father, William ...
A.
Because she thought man and woman should be equal.
B.
Because the president Washington asked her to do so.
C.
Because she wanted to show respect to her father who brought up six children.
D.
Because she could not celebrate Mother's day.