规模报酬递减表明,当企业规模扩大时,产量反而减少,因此是规模不经济的。
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Fill in the blanks with the words given below. Change the form where necessary. Each word can be used only once.adoptfocustransformregulatetypical1. It is difficult to conclude what a(n)____________ student does in his spare time because every student has different interests.2. Some of your suggestions have been ___________, but others have been turned down as they are not workable.3. When you do yoga, try to __________ your breathing. Don't breathe too fast and make sure you breathe only through your nose.4. All of a sudden, he lost his interest in engineering, and _______________ his attention on learning a foreign language.5. People are beginning to realize that to _______________ nature at will is the biggest mistake that man has ever made.
(单项选择)规范规定桥梁静载试验主要控制测点的相对残余变形(或应变)不宜大于( )。
A. 10%
B. 15%
C. 20%
D. 25%
(单项选择)规范规定桥梁静载试验卸载后,其扩展宽度应闭合到容许值的( )。
A. 1/4
B. 1/3
C. 1/2
D. 以上都不对
老师对学生上课迟到很生气,就把那些迟到的学生关在了门外。(shut out)