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【单选题】
频率、波长、波数及能量的关系是( )A.
频率越高，波长越短，波数越高，能量越高
B.
频率越低，波长越长，波数越低，能量越高
C.
频率越高，波长越长，波数越低，能量越高
D.
频率越低，波长越短，波数越高，能量越低
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】职业性有害因素所致损害主要包括
A.
工伤、肿瘤、职业病
B.
工伤、职业病、工作有关疾病
C.
工伤、劳动能力减退
D.
职业病，工作有关疾病
E.
工作有关疾病、工伤
【单选题】I ____ if I had had your address.
A.
would have visited
B.
would visit
C.
visited
D.
will visit
【简答题】以大气压力为基准测得的压力是 ,也称为 。
【简答题】Grammar V. Complete the following sentences with needn.t have done or didn.t need to do. 1. You ____________________ (carry) it home. If you had asked, the shop would have delivered it for you. 2. Whe...
【简答题】职业性有害因素中化学因素主要包括( )和( )。
【简答题】第II卷非选择题（共45分） V. Task-based reading 任务型阅读 1’ * 10 = 10’ 请认真阅读下面短文，并根据所读内容在文章后图表中的空格里填入最恰当的单词。注意：每空不超过1个单词。 Oh, the things that I should see if I had the power of sight for just three days! The fast d...
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【单选题】I ____ if I had had your address.
A.
would have visited
B.
would visit
C.
visited
D.
will visit