非端部结合其他温带濒危非针叶厚

第一小组共6名学生，在一次“引体向上”的测试中，他们分别做了：8，10，8，7，6，9个．这6名学生平均每人做了（    ）个。

The mother of a 2-year-old child tells the nurse that her baby is using a potty seat but is still having problems toilet-training. Which of the following suggestions by the nurse would he most appropriate

A．Offer the child more praise each time.

B．Use a potty chair instead of a potty seat.

C．Focus on the "accidents" that occur during training.

D．Defer training until the child is developmentally ready.

确定了近代欧洲宗教改革“教随邦定”的什么和约？

RAKE接收机的基本原理是利用了（）技术

A.分集接收

B.极化分集

C.时间分集

D.频率分集

RH循环高度是指盛钢桶钢液面到（）的高度。