单选题

When the spring compresses, the valve opens.

A The compressing of the spring can cause the valve to open.

B There is no change of the valve when the spring compresses.

C After compressing of the spring, the valve goes to closed position.

查看答案

正确答案：A （备注：此答案有误）

相似试题

单选题

When the spring compresses, the valve opens.

答案解析
多选题

【单选题】This scenic spot attracts a ______ stream of tourists every day, especially in spring when it is the best season to travel.

答案解析
单选题

Make sure that the lock nut touches the spring.

答案解析
问答题

Spring

答案解析
判断题

others get the dinner ready. When they enjoy the meal, they give each other the best wishes for the coming year. They all have a good time.The most important festival in China is The Mid-Autumn Festival.The Chinese Spring Festival usually celebrated In January or March.Dumplings are the special kind of food for the Spring Festival in China.The meaning of the food “dumplings” for Chinese people in the Spring Festival is “help yourself”.The families give each other the best wishes when they are h

答案解析