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搜题
【单选题】
小字组g上行至小字1组d包括几个全音?A.
3
B.
3.5
C.
4
D.
4.5
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】在同时使用了对称密码体制和非对称密码体制的密码系统中,如果选用了安全强度比较弱的对称密码体制,比如有效密钥长度为56比特的DES体制,为了确保安全性,非对称密码体制的安全强度就应该更强,比如选择2048bit的RSA公钥加密体制。
A.
正确
B.
错误
【单选题】Why is it not necessary to provide powered flight in space all the time? ______
A.
Few spacecrafts complete their flight operations.
B.
The Earth's gravity cannot be overcome.
C.
No further power is needed after the escape speed is reached.
D.
Free fall takes the place of the Earth's gravity pull.
【单选题】Why is it not necessary to provide powered flight in space all the time?
A.
Few spacecrafts complete their flight operations.
B.
The Earth's gravity cannot be overcome.
C.
No future power is needed after the escape speed is reached.
D.
Free fall takes the place of the Earth's gravity pull.
【判断题】in this video, pink is perfect to be combined with poor materials and natural wood elements,bucause it can provide contrast and warmth in the space.
A.
正确
B.
错误
【判断题】In America, motels are usually in the business district; the objective is to provide a resting space for the employees.
A.
正确
B.
错误
【简答题】要把沙子运上三楼，小慧采用了图中的第一种方法，1min完成了任务.若不计摩擦，试求： (1)小慧的功率； (2)小慧运沙子时的机械效率； (3)哪种方法的机械效率最大，为什么？
【简答题】密码体制有对称密钥密码体制和非对称密钥密码体制。而 密钥密码技术允许加密解密双方拥有不相同的密钥。
【单选题】小红、小兰、小慧三姐妹，分别住在丰台区、通州区、朝阳区。小红与住在通州的姐妹年龄不一样大，小慧比住在朝阳区的姐妹年龄小，而住在通州的姐妹比小兰年龄大。那么按照年龄从大到小，这三姐妹的排序是( )
A.
小红、小慧、小兰
B.
小红、小兰、小慧
C.
小兰、小慧、小红
D.
小慧、小红、小兰
【简答题】6 Section B Directions: There are 5 incomplete statements here. You should fill in each blank with the proper form of the word given in brackets. Write the word or words in the corresponding space on ...
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