单选题 The five rings on the flag are Blue, Black, Red, Yellow and Green. In how many different ways could the rings have been arranged in colour order?
120.
100.
80.
60.
单选题 Different foods are to be found on three shelves in a fridge. Butter is kept below the eggs while cheese is kept above the milk. The butter is also above the milk, but the eggs are on the same shelf as the yoghurt. The ice cream is above the cheese. What is on the bottom shelf?
Butter.
Eggs.
Cheese.
Milk.
单选题 Jenny and Jessica have short hair. Nicky and Jade have long hair. Jade, Jenny and Nicky are tall. Jessica is not. Jade does not wear spectacles, the others do. Which of the following statements must be true?
Jade and Jenny are tall and have long hair.
Jenny and Jessica have short hair and are tall.
Jessica and Nicky wear spectacles and have short hair.
Jessica and Jenny have short hair and wear spectacles.
For a purifier changing to a gravity disc with smaller hole diameter will move the interface towards the().
煤矿安全生产标准化如何建立和保持?
商业地产项目租赁价格的制定一般采用()。
裘皮qiú pí
以宙斯为中心的一组神,因传说他们住在希腊北部的()山上,所以被称为“()神统”。
前照灯远光光束照射在距离10m 屏幕上时,要求在屏幕光束中心离地高度,对乘用车为0.75H~0.8H
机械密封“o”形环裂口原因有哪些?
根据发电效益进行工程等别划分,当装机容量在5万~1万kW时,工程属于()等工程。
LKJ-2000监控装置以红色曲线方式显示当前区段的限制速度和前方()以内的线路限速情况
高速铁路天窗原则上不应少于()分钟。