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【单选题】
地下水对建筑结构材料腐蚀的种类分为()A.
结晶腐蚀、分解腐蚀、符合腐蚀
B.
结晶腐蚀、分解腐蚀、冰冻腐蚀
C.
分解腐蚀、冰冻腐蚀、复合腐蚀
D.
结晶腐蚀、冰冻腐蚀、复合腐蚀
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举一反三
【单选题】How can the companies cut their cost according to the passage?
A.
They dismiss some employees to save money.
B.
They use temporary labors and cheap labors.
C.
They don't pay for the employees' health insurance.
D.
They invest money on marketing campaigns.
【单选题】乙型肝炎病毒是威胁输血安全的主要病毒之一，原因是( )。
A.
乙肝病毒抵抗力强
B.
感染后造成肝脏损伤
C.
普通人群中乙肝感染率很高
D.
乙肝可以转化为肝硬化和肝癌
E.
乙肝病毒为DNA病毒
【单选题】How can the Companies cut their cost according to the passage?
A.
They dismiss some employees to save money.
B.
They use temporary labors and cheap labors.
C.
They refuse to pay for the employees' health insurance.
D.
They invest money on marketing campaigns.
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