选择题:In September 1944 he was able to return to his aca

题目内容:
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).

A、
was stricken by

B、
was shared with

C、
was taken care of

D、
was looked after
参考答案:

1. 在图示的脚踏车里程表的机构中,C为车轮轴,已知各轮齿数为z1=20,z2=100,z3=120

1. 在图示的脚踏车里程表的机构中,C为车轮轴,已知各轮齿数为z1=20,z2=100,z3=120,z4=12,z4.=30,z5=100。当nc=15 r/

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传感器的静态特性中,输出量的变化量与引起此变化的输入量的变化量之比称为__ ___。

传感器的静态特性中,输出量的变化量与引起此变化的输入量的变化量之比称为__ ___。

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作者揭露“弃城图存者”和“擅兵坐观者”的作用是什么?(4分)

作者揭露“弃城图存者”和“擅兵坐观者”的作用是什么?(4分)

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