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【单选题】
实际生产中评价石灰石的质量指标是石灰石的( )：A、CaO含量 B、SiO2含量 C、有效熔剂性 D、碱性氧化物(CaO+MgO)含量A.
CaO含量
B.
SiO2含量
C.
有效熔剂性
D.
碱性氧化物(CaO+MgO)含量
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反馈参考答案：
举一反三
【判断题】Read the poem by Haizi,then tell the following statement is true or false. Haizi passed away at the age of 25. ( ) Facing the Sea with Spring Blossoms By Hai Zi 从明天起,做一个幸福的人 From tomorrow on, ...
A.
正确
B.
错误
【单选题】听力原文：M: Are you looking forward to your trip to Canada, Julie? W: I can't wait to see Canada, but I'm scared of the journey. My husband insists on flying, but I want to sail. Planes make me nervous. M...
A.
The transportation of the trip.
B.
The air-sick.
C.
The sea-sick.
D.
The quarrel between a couple.
【简答题】设随机变量 X的绝对值不大于 1,并且满足条件 , , 则 .
【简答题】设随机变量 且满足P{X 1 X 2 =0}＝1，则P{X 1 ＝X 2 }等于[ ] (A) 0； (B) 1/4； (C) 1/2； (D) 1．
【单选题】听第9段材料，回答第15～17题。 Text 9 M: Are you looking forward to your trip to Canada, Susan? W: I can't wait to see Canada, Jason, but I'm scared stiff of the journey. My husband insists on flying, but I want t...
A.
Taking a voyage.
B.
Taking a train.
C.
Taking a flight.
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