单选题
发布日期:2021-03-22
magnetic amplifier
ship’s service alternator
three-wire DC generator
saturable core reactor
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PPPoE接入采用()。
为了确保热流计装置对于各种不同热阻的材料准确测试,装置必须使用同一标定板进行多次标定。
水的pH值()所含的HOCl越多,因而消毒效果较好。
“萧贺或者是教师,或者是公务员。”上述命题是以下哪种情况?()
《红与黑》中侯爵瘦削而矮小,有一对十分灵活的眼睛,头上带有金色假发。他是个极端()人。
R22在高冷凝压力下的最大压力差为pk一po≤1.8MPa。
高速公路、一级公路粗集料含泥量机铺检验频率()m3/批。
进行氨系统的气密性试验;试验介质宜采用()。
下列不是呼吸心跳停止诊断的必需依据的是()
简述夏商西周法律思想的发展线索。
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