题目内容

Why is Ms. Connors angry？

A. The women didn't pay their rent on time.
B. She can't find anyone to repair the dishwasher.
C. She had to buy a new dishwasher.
D. Paula had some repairs done without her permission.

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有一宗土地，具有30年使用年期的地价是80元／平方米，土地还原利率取6％，假设该宗土地的使用年期是50年时，其地价是()元／平方米，土地还原利率取6％。

A. 91．7
B. 95．6
C. 83．3
D. 72．5

The entire morale among the employees in Factory B _______ until now ever since the introduction of our new flexible working hour system.

A. were boosted
B. had been boosted
C. boosting
D. has been boosted

The conference organizer has ______about the agenda but cannot provide help for hotel reservations.

A. inform
B. informed
C. to inform
D. information

设(X1，X2，…，Xn)是来自正态总体N(μ，σ2)的简单随机样本，其中参数μ，σ2未知，则下列各项中，不是统计量的有()。