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【单选题】
危险截面的确定，对于杆件对象的工程设计是非常重要的，若杆件的材料相同，轴向拉伸杆件危险截面发生在（ ）的截面上。A.
轴力最大、横截面面积最大
B.
轴力最小、横截面面积最小
C.
轴力最小、横截面面积最大
D.
轴力最大、横截面面积最小
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【简答题】I recently heard a story about a famous scientist who had made several very important medical breakthroughs（突破）. He was being interviewed by a reporter who asked him he thought he was able to be so mu...
【单选题】下列各组缓冲溶液中，缓冲容量最大的是( )。
A.
0.5mol·L -1 NH 3 和0.1mol·L -1 NH 4 Cl
B.
0.1mol·L -1 NH 3 和0.5mol·L -1 NH 4 Cl
C.
0.1mol·L -1 NH 3 和0.1mol·L -1 NH 4 Cl
D.
0.3mol·L -1 NH 3 和0.3mol·L -1 NH 4 Cl
【简答题】I recently heard a story about a famous scientist who had made several very important medical breakthroughs（突破）. He was being interviewed by a reporter who asked him 1 he thought he was able to be so ...
【多选题】假设需要在内存分配1KB存储空间,则其相应的地址段可选用______。
A.
000H——FFFH
B.
100H——4FFH
C.
100H——500H
D.
A00H——DFFH
【简答题】完形填空。 I recently heard a story about a famous scientist who had made several very important medical breakthroughs.He was being interviewed by a reporter who asked him __ 1 __ he thought he was able to...
【简答题】n. an experienced person who advisers and helps someone with less experience over a period of time;
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