问题
单项选择题
制冷管道和设备的隔热层厚度的确定原则是( )。
A．根据隔热层的外表面不会引起结露的要求来确定其最小厚度
B．根据隔热层的内表面不会引起结露的要求来确定其最小厚度
C．根据热量损失最小原则来确定其最小厚度
D．采用统一厚度
答案
参考答案：A
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制冷管道和设备的隔热层厚度的确定原则是( )。
A．根据隔热层的外表面不会引起结露的要求来确定其最小厚度
B．根据隔热层的内表面不会引起结露的要求来确定其最小厚度
C．根据热量损失最小原则来确定其最小厚度
D．采用统一厚度
参考答案：A
| 阅读理解。 | ||||||||
| The Video Shop's Winter Sale (大减价) on every CD, VCD and DVD, POP MUSIC, ROCK, JAZZ, DISCO, COUNTRY & MOVIES.
No telephone or e-mail orders (订购) during the sale. Open hours:Monday to Friday 9:00 am to 8:00 pm Saturday to Sunday 10:00 am to 6:00 pm Add: 108 Culture Street | ||||||||
| 1. The shop _____. | ||||||||
| A. sells CDs only B. is having a sale on everything C. is having a sale On CD, VCD and DVD D. is closed | ||||||||
| 2. _____ are on sale. | ||||||||
| A. Only rock CDs B. Only jazz and country DVD C. Only movies VCDs D. All of them | ||||||||
| 3. You may pay $8.90 for a music CD on December 22. How much should you pay for the same CD On November 30th? | ||||||||
| A. $8.90. B. $0.60. C. $9.50. D. We don't know. | ||||||||
| 4. Which of the following is TRUE? | ||||||||
| A. You should go to the shop for the CDs, VCDs and DVDs by yourself. B. You can make a phone call to order the things you want. C. You can order (订购) through Internet. D. You can write a letter to order CDs or something. | ||||||||
| 5. You can buy CDs _____. | ||||||||
| A. at 8 am Thursday evening B. at any time from Monday to Sunday C. at 8 o'clock Saturday rooming D. at 5:00 Sunday afternoon |