咀嚼效率是指 () A.嚼碎一定量食物所需的时间 B.在一定时间内嚼碎食物的数量 发布时间:2017-05-03 07:05 │ 来源:www.tikuol.com 题型:单项选择题 问题: 咀嚼效率是指 ()A.嚼碎一定量食物所需的时间B.在一定时间内嚼碎食物的数量C.在一定时间内将食物嚼碎的能力D.将一定量食物嚼碎的能力E.在一定时间内将一定量食物嚼碎的能力
题型:单项选择题 完成对话,将正确答案的序号写在题前括号里。 A: Hello. This is Jack l Daily Report. I'm 2 a survey. 3 I ask you some questions, please? B: Sure. A: What 4 you doing? B: I am 5 TV. A: 6 is your mother doing? B: She's 7 dinner. A: What is your 8 doing? B: You mean my cat? He's watching the fish 9 the fishbowl. A: Thank you. B: 10 . Bye.( ) 1. A. from ( ) 2. A. do ( ) 3. A. Am ( ) 4. A. is ( ) 5. A. watch ( ) 6. A. What ( ) 7. A. cooking ( ) 8. A. father ( ) 9. A. in ( ) 10. A. Great B. in B. make B. Can B. am B. watching B. When B. cook B. pet B. on B. OK C. of C. doing C. Does C. are C. watches C. Who C. make C. brother C. at C. You're welcome 查看答案
题型:单项选择题 在排烟机外表明显部位设置标牌,标牌应有以下哪些内容()。A.排烟机名称、型号B.排烟机的额定转速、额定风量C.动力源型号、额定功率、内燃机使用燃料种类D.排烟机使用环境温度范围E.制造商的出厂编号或执行标准编号 查看答案