判断题 材料的吸声性能与声波的传播方向有关,与声波的频率无关。( )
您可能感兴趣的试卷
你可能感兴趣的试题
最新试题
图3是番禺沙湾飘色,关于沙湾飘色,哪些描述是正确的?()
题型:多项选择题
He wants to change the world and make it better.()
题型:判断题
He is looking after the elderly at a nursing home nowadays.()
题型:判断题
图1这副书法作品的落款为“白沙”,请问是谁?()
题型:单项选择题
图2是谁的书法作品?()
题型:单项选择题
图2的作者,该书法家是哪里人?()
题型:单项选择题
The robot would stop in front of pets and people thanks to().
题型:单项选择题
According to Steven Waelbers,the robot is designed to().
题型:单项选择题
His major is marketing.()
题型:判断题
根据原文提供的信息,下列推断正确的一项是()
题型:单项选择题