客运专线高性能混凝土选用低()、低()的水泥,尽量避免使用早强水泥和()含量高的水泥;
参考答案:水化热;含碱量;C3A
The Customs surveillance zone include the following places except ().
A. any seaport, railway and high way station, airport, border pass or international postal matter exchange where there is a Customs establishment
B. any place where Customs control is conducted
C. any place without a Customs establishment but which has been approved by the state council as a point of entry and exit
D. any place along the border of the country
在性态度因素中,最重要的是( )。
A.性的认知成分
B.性的情感成分
C.性的行为倾向成分
D.性的道德成分