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【简答题】In September 1944 he was able to return to his academic duties, but soon after the war ended he ____(患上了)a serious illness and did relatively little research thereafter .
【单选题】In September 1944 he was able to return to his academic duties, but soon after the war ended he _____ a serious illness and did relatively little research thereafter.
A.
be stricken by
B.
been stricken by
C.
being stricken by
D.
was stricken by
【简答题】In September 1944 he was able to return to his academic duties, but soon after the war ended he ( ) a serious illness and did relatively little research thereafter ( 从那以后 ).
【单选题】distinct [dis5tiNkt]
A.
adj. 清楚的, 明显的, 截然不同的, 独特的
B.
n. 区别, 差别, 级别, 特性, 声望, 显赫
C.
v. 区别, 辨别
D.
adj. 卓著的, 著名的, 高贵的
【简答题】v. 区分 , 辨别 , 分清 d_______
【简答题】In September 1944 he was able to return to his academic duties, but soon after the war ended he _____ a serious illness and did relatively little research thereafter.
【简答题】图示钢杆承受P= 120 kN的轴向拉力，若用于制造钢杆的板材厚度为20mm，许用拉应力[σ]= 175 MPa，许用切应力[τ]= 100 MPa，许用挤压应力[σb]= 350 MPa，若螺钉材料与钢杆材料相同；试求钢杆端部的尺寸b。 【图片】【图片】
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