Four strokes—intake stroke, compression stroke, power stroke and exhaust stroke—complete one working cycle．

词汇题：There are eight basic strokes: dot, horizontal stroke, turning stroke, vertical stroke, hook stroke, right-upward stroke, left-downward stroke and right-downward stroke. 英译汉。注意标点。 汉字有八个基本笔画/八大笔画：____________________

Paragraph 2（） A: Effects of a stroke B: Annual cost of stroke in the US C: Definition and description of a stroke D: Breakthroughs in treatment E: Risk factors of stroke F: Warning signs of a stroke

There are two kinds of stroke, and they are ischemic stroke and hemorrhagic stroke.

The old man keeps his good habit of getting up and going to bed ________. A: on strike B: with a stroke C: on the stroke D: at a stroke

() What are the possible consequences of obesity based on the information of this video?? heart disease, respiratory disease, stroke, and certain cancers|insomnia, heart disease, diabetes and stroke|AIDS, diabetes, stroke, and certain cancers|heart disease, diabetes, stroke, and certain cancers

compression stroke

It is a verified fact that the higher ____<br/>of a two-stroke engine, the higher _____. A: the engine efficiency…the<br/>stroke/bore ratio B: the stroke/bore ratio…the<br/>engine efficiency C: the bore / stroke ratio…the<br/>engine efficiency D: the engine efficiency…the<br/>bore / stroke ratio

名词解释：stroke volume 

What are the symptoms of sun stroke?（）