磁控管在通电工作时，若磁控管电流指示电表指灯抖动，可能的原因是（）A、调制脉冲幅度太
题型：单项选择题
问题：
磁控管在通电工作时，若磁控管电流指示电表指灯抖动，可能的原因是（）
A、调制脉冲幅度太大
B、磁控管已衰老
C、磁控管内有打火现象
D、磁控管特高压太高
题型：单项选择题
阅读理解。
Spiderman was created in comics in 1962. It is a story about a shy and silent high school student,
Peter Parker. After being bitten by a strange spider, Peter finds himself with super powers. With great
power also comes great responsibility ( 责任). Peter keeps fighting against bad men who want to harm
people.
Spiderman is more like a friendly neighborhood student rather than a super hero. He experiences
difficulties with friends and family.
In short, Spiderman remains in every man, "the super hero who could be you". It is Spiderman s
simple humanity ( 人性) that helps him win millions of fans across the world.
根据短文内容填表格，每空一词。
