连铸坯的激冷层比模铸钢锭的激冷层（） A.厚 B.薄 C.脆 发布时间：2018-09-13 00:05 │ 来源：www.tikuol.com 题型：单项选择题 问题： 连铸坯的激冷层比模铸钢锭的激冷层（）A.厚B.薄C.脆
题型：单项选择题 完形填空。 Mr. Green works in an office in Chicago. 1 Saturday, he went to the office to do some work. Whenhe got on the elevator, it stopped between the 2 . Mr. Green could not get out of the elevator. He startedto 3 , but no one 4 him. Then Mr. Green remembered that it was a holiday in America. No one was going to come to work 5 Tuesday. There was 6 for him to do. He had to wait. With nothing to eat 7 drink, Mr. Green slept for most of the time. Early Tuesday morning, his 8 came to work and found the elevator was not working. When the elevator was 9 , Mr. Green came out. He was cold, weak, and tired. He had been in the elevator forabout sixty-four 10 ! Now Mr. Green says, "I will only use elevators if they have a telephone in them." ( )1. A. On ( )2. A. buildings ( )3. A. speak ( )4. A. saw ( )5. A. until ( )6. A. something ( )7. A. and ( )8. A. wife ( )9. A. closed ( )10. A. hours B. One B. rooms B. say B. heard B. on B. nothing B. for B. teachers B. opened B. days C. All C. floors C. shout C. came C. by C. everything C. or C. workmates C. clean C. minutes 查看答案
题型：单项选择题 下列说法正确的是（ ）A．医疗上常用75%（体积分数）的酒精作消毒剂B．加碘食盐中的“碘”通常是指碘单质C．体操运动员所用的防滑“镁粉”，其成分是金属镁D．使用明矾可软化硬水 查看答案