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【单选题】
是一种专门用来测量电气设备绝缘电阻的便携式仪表还是安装式仪表?A.
便携式仪表
B.
安装式仪表
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举一反三
【单选题】The hunter ____ down and ____ to the farmer that he had___ his gun against the tree. [ ]
A.
lay, lied, laid
B.
lay, laid, laid
C.
laid, lay, lied
D.
laid, lied, lay
【多选题】An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express important ideas in the passage. Some sentences do...
A.
As the Ice Age ended, hunter-gatherers had to develop new ways of finding food in response to changes in climate and in population.
B.
Tools and weapons became less important as large animals became a less important source of food.
C.
The tools used by hunter-gatherers at the end of the Ice Age were developed for use with specific types of food.
D.
Archaeologists say that hunter-gatherer groups were not affected by the changes in animal populations at the end of the Ice Age.
E.
Hunter-gatherers could avoid food shortages by harvesting resources that were only available in certain seasons and storing them in large amounts.
F.
In many areas, groups that once hunted large animals now used seeds and nuts for their nutritional needs.
【简答题】化学与人体健康密切相关。一些重要的营养素如：糖类、油脂、蛋白质、维生素等，对人类的生命活动具有重要意义。作为正在生长发育的学生，不能偏食、挑食，每天都要摄入足够、均衡的营养。 （1）某同学在体检时发现蛋白质摄入量不足。假如你是一名医生，你会建议他在平时的饮食中应该多吃的食物是___________（任填一种）。 （2）某同学平时怕发胖，吃饭时以吃菜为主，很少吃主食，结果课堂上他常常出现乏力、疲倦甚...
【简答题】化学与人体健康密切相关。一些重要的营养素如：糖类、淀粉、油脂、蛋白质、维生素等，对人类的生命活动具有重要意义。作为处在身体生长发育关键时期的中学生，不能偏食、挑食，每天都要摄入足够、均衡的营养。 (1)某同学平时不吃饭，只吃菜，结果出现乏力、疲倦甚至昏迷等症状，他缺少的营养素是 ； (2)某同学在毕业体检时，检查出蛋白质摄入量不足。假如你是一名医生，你会建议他在平时的饮食中应该多吃的食物是 （任填...
【单选题】The hunter had to _________ death when he suddenly found out that a bear was coming toward him.
A.
feud
B.
faze
C.
fester
D.
feign
【多选题】电气工程施工图中某处标注为BLX-3×4-SC20-WC,以下说法正确的是( )。
A.
BLX表示铝芯橡皮绝缘导线
B.
BLX表示铜芯塑料绝缘导线
C.
3×4表示3根截面积为4mm2的导线
D.
3×4表示4根截面积为3mm2的导线
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