题目内容
风砂轮是用压缩空气驱动电动机带动砂轮转动实现对加工件表面清理的。其设备简单，使用方便，适用于小面积和焊缝的清理。( )
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Directions: This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are three parts in this section, Part A, Part B and Part C. Remember, while you are doing the test, you should first put down your answers in your test booklet, NOT on the ANSWER SHEET. At the end of the listening comprehension section, you will have 5 minutes to transfer your answers from your test booklet onto ANSWER SHEET 1. If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test is started. Now look at Part A in your test booklet.Part A You will hear a talk. As you listen, answer questions 1—10 by circling True or False. You will hear the talk ONLY ONCE. Both Galileo and Shakespeare were born in Italy, in 1564.
由于木材的多孔性，易于吸水和排水，具有干胀湿缩的特点，易造成涂膜发生起泡、开裂、脱落和回黏等现象。( )
起重机械每两年至少应做一次全面技术检查。
Questions 17—20 are based on the following conversation. How do thermographic pictures indicate the temperatures of various parts of the body
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