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
求翻译:Indicate which of the following amino acids are polar,是什么意思?待解决 悬赏分:1 - 离问题结束还有 Indicate which of the following amino acids are polar,问题补充:匿名 2013-05-23 12:21:38 指出下列哪个氨基酸是极性, 匿名 2013-05-23 12:23:18 [object Object] 匿名 2013-05-23...
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...
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 ...
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: ...
解析 B。原因:文章中提到“The unique ecosystems of the polar regions are also home to a variety of other species, including whales, seals, and various types of birds.”,明确提到海豹在南极地区,而北极熊主要在北极,老虎和猴子不在极地地区。
Which of the following is the best title for the passage A.Polarity Reversal: A Fantastic Phenomenon of Nature.B.Measurement of the Earth’s Magnetic-Field Intensity.C.Formation of the Two Poles of the Earth.D.A New Approach to the Study of Geophysics. 相关知识点: ...
Which of the following molecules are polar and which are non-polar? a. NI_{3} b. PCl_{5} c. PH_{3} d. C_{2}F_{2} d. CH_{2}BrCHCH_{2} e. C_{2}HF f. H_{2}O_{2}Which of the following molecules is polar? (a) NBr_3 (b) CS_2 (c) NH_...
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。