雷电冲击试验时,不允许非被试端子通过阻抗接地。()
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现代汉语语素在语音上以()为主,书面上用一个()记录。
被交流干扰的管道与牺牲阳极直接相连,这种排流方法叫()。
A. 直接排流
B. 隔直排流
C. 负电位排流
D. 钳位式排流
拉伤是钝性暴力直接作用于人体某部而引起的急性闭合性损伤。
A. 正确
B. 错误
A distance piece, with ground faces, known as a compression plate, may be interposed between the rod and the beating housing, its thickness being chosen to ensure the correct ().
A. compression pressure
B. compression test
C. compression ratio
D. compression clearance