Which of the following is a polar animal? A. Koalas B. Bears C. Arctic hares D. Cats 相关知识点: 试题来源: 解析 C。考拉和猫不是极地动物,熊有很多种类,只有北极地区的熊,如北极熊等才是极地动物,而北极兔是典型的极地动物。反馈 收藏 ...
百度试题 结果1 题目Which of the following is a polar animal with flippers? A. Penguin B. Cat C. Dog D. Pig 相关知识点: 试题来源: 解析 A。企鹅有脚蹼,是极地动物。猫、狗和猪都不是极地动物。反馈 收藏
The polar or nonpolar nature of any compound can also be determined from its solubility in a sol...
Moderate precipitation C. Extreme cold D. Frequent thunderstorms 相关知识点: 试题来源: 解析 C。本题考查极地地区的特征。极地地区的主要特征是极度寒冷,所以 C 选项正确。A 选项高温不符合极地地区;B 选项适度降水不准确,极地地区降水较少;D 选项频繁的雷暴在极地地区很少见。反馈 收藏 ...
which of the following molecules is polar?A,BH3B,NF3C,C2H6D,SF6E,CCL4 C,D选项我明白,是空间结构造成没有net pole.其它选项呢?BH3的结构是trigonal planar ,每个键的夹角120度 抵消pole么?其他的呢?写错了,是C,E选项我明白 答案 A是等边三角形结构,没极性,B在中间,三个H为三个角B是三角锥,N上面...
A. High temperatures B. Abundant rainfall C. Long, cold winters D. Mild summers 相关知识点: 试题来源: 解析 C。解析:极地气候的特点是冬季漫长寒冷。极地地区气温很低,不会是高温,所以A错误。极地地区降水少,不是降雨丰富,B错误。极地地区夏季也很寒冷,不是温和的,D错误。反馈 收藏 ...
Which of the following is a threat to the polar environment? A. Climate change B. Overfishing C. Industrial pollution D. All of the above 相关知识点: 试题来源: 解析 D。气候变化(Climate change)、过度捕捞(Overfishing)和工业污染(Industrial pollution)都会对极地环境造成威胁。
Which of the following is a characteristic of the polar climate? A. Mild winters B. Cool summers C. Extreme cold throughout the year D. Frequent rain 相关知识点: 试题来源: 解析 C。极地气候的特点是全年极度寒冷。不存在温和的冬季、凉爽的夏季和频繁的降雨。
The polar regions are getting warmer. Which of the following is a big threat to polar bears? A. Longer ice - free periods make it harder to find seals. B. More rain makes their caves wet. C. Stronger winds blow away their food. 相关知识点: ...
Global warming has led to the melting of polar ice caps. Which of the following is most likely to happen to polar bears? A. Their habitats will expand B. Their population will increase C. Their food sources will decrease D. They will adapt E. asily to warm climates 相关知识点: ...