"Jack is between jobs at the moment" means he has two jobs now.
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Can you revise the following setence by giving it more details?--The chocolate cake is delicious.
0603 解析函数的对数留数等于其积分周线内零点的个数。
A. 对
B. 错
电力网的电压降落是指任意两点的电压相量差。
A. 对
B. 错
输电线路和变压器的串联阻抗上的损耗随传输功率的变化而变化,为变动损耗。
A. 对
B. 错
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