【单选题】【消耗次数：1】
下列关于膨胀剂、防冻剂、泵送剂、速凝剂的相关说法中，有误的是( )。
①
泵送剂是改善混凝土泵送性能的外加剂
②
膨胀剂是能使混凝土产生一定体积膨胀的外加剂
③
速凝剂主要用于喷射混凝土、堵漏等
④
常用防冻剂有氯盐类、氯盐阻锈类、氯盐与阻锈剂为主复合的外加剂、硫酸盐类
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相关题目
【单选题】
下列关于膨胀剂、防冻剂、泵送剂、速凝剂的相关说法中，有误的是（）。
①
膨胀剂是能使混凝土产生一定体积膨胀的外加剂
②
常用防冻剂有氯盐类、氯盐阻锈类、氯盐与阻锈剂为主复合的外加剂、硫酸盐类
③
泵送剂是改善混凝土泵送性能的外加剂
④
速凝剂主要用于喷射混凝土、堵漏等
【单选题】
关于混凝土外加剂的说法，错误的是（）
①
A.掺入适当减水剂能改善混凝土的耐久性
②
B.高温季节大体积混凝土施工应掺速凝剂
③
C.掺入引气剂可提高混凝土的抗渗性和抗冻性
④
D.早强剂可加速混凝土早起强度增长
随机题目
【单选题】
This job is great ( ) advancement, but its too far away from my hometown.
①
in terms of
②
as a result of
③
based on
④
on behalf of
【单选题】
The gardens and history of Suzhou ( ) all who visit there.
①
captivate
②
captive
③
captivation
④
captivating
【单选题】
The government would be unwise to （ ） the complaints of its people.
①
overlook
②
ignore
③
neglect
④
disrespect
【单选题】
In high school, I was very unpopular, and I did ( ) the discrimination from my classmates.
①
encountered
②
encounter
③
had encountered
④
will encounter
【单选题】
The pavilions of each country at the World Expo can reveal the ( ) cultures of the world.
①
diversity
②
diversify
③
divert
④
diverse
【单选题】
His ( ) as a social worker brings him much thinking of the meaning of life and charity.
①
job
②
profession
③
work
④
career
【单选题】
He denied that his country wants to （） Europe.
①
dominate
②
control
③
document
④
domestic
【单选题】
Everyone must() his share of the responsibility to protect the environment.
①
assumed
②
assume
③
assuming
④
assumptive
【单选题】
Much importance should be ( ) to physical and mental health of students, which, however, is often neglected.
①
attached
②
detached
③
stressed
④
thrown