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【多选题】
下列关于高聚物改性沥青防水卷材的说法正确的是（）。A.
它具有良好的弹性，温度稳定性好
B.
它既可冷操作粘贴，又可热销贴
C.
它是一种冷操作的耐腐蚀、耐久性良好的防水卷材
D.
它是一种技术经济效果较好的防水材料
E.
它具有抗拉强度高、高弹性、耐高温等诸多特点
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举一反三
【单选题】In terms of the salutation, which of the following statements is CORRECT?
A.
The salutation is the complimentary close with which every letter ends.
B.
In all English-speaking countries, if you don't know the name of the recepient, you can address them as Dear Sir or Gentlemen.
C.
If the receiver is known to the writer personally, a less formal and warmer greeting is used, such as "Dear Mr.White" or "Dear Ms. Bontous".
D.
Salutation can only be followed by a comma.