某男，13岁，恒牙
，磨牙远中关系，双侧第二磨牙正锁，上颌略前突，下颌基本正常，上切牙至SN为105°，覆覆盖Ⅱ度，上下牙弓Ⅱ度拥挤，用方丝弓矫治器拔牙矫治
第二磨牙锁矫治的时机为
A:在矫治初期解除锁 B:在远中移动尖牙时 C:在关闭拔牙间隙时 D:在牙位精细调整时 E:16岁以后矫正
某男，13岁，恒牙，磨牙远中关系，双侧第二磨牙正锁，上颌略前突，下颌基本正常，上切牙至SN为105°，覆覆盖Ⅱ度，上下牙弓Ⅱ度拥挤，用方丝弓矫治器拔牙矫治
在矫治锁时临床上可以使用
A:单侧前磨牙垫 B:双侧前磨牙垫 C:单侧至第一磨牙的后牙垫 D:双侧至第一磨牙的后牙垫 E:前牙连冠斜导
某男，9岁，前牙反求治。侧面观凹面型，上颌后缩，下颌基本正常。口内检查：前牙反，双侧磨牙近中尖对尖，下颌不可退至对刃。反覆
该患者错畸形有关的可能性最大的病因是
A:乳牙反未治，上颌骨发育受限 B:咬下唇习惯 C:吐舌习惯 D:后牙萌出过度 E:垂体功能亢进
在ho_counter不为零时，RSS将不对MS作出切换决定，那么由哪一个参数来设定ho_counter的最大值？（）
A:hreqave B:hreqt C:n，p D:ho_recognised_period
对于引起HO的原因，下面哪些描述是正确的（）。
A:Better cell HO B:Emergency HO C:Low battery HO D:Power budget HO
ho为送风状态点的焓值，hn为室内状态点的焓值，则计算送风量的公式为：（）。
A:G＝Q（hn+ho）（kg/h） B:G＝Q（hn-ho）（kg/h） C:G＝Q/（hn+ho）（kg/h） D:G＝Q/（hn-ho）（kg/h）
计算送风量的公式是：G＝Q/（hn-ho）（kg/h）其中（）。
A:hn为室内状态点的焓值，ho为送风状态点的焓值 B:ho为室内状态点的焓值，hn为新风状态点的焓值 C:hn为回风状态点的焓值，ho为室内状态点的焓值 D:ho为回风状态点的焓值，hn为送风状态点的焓值
ho为送风状态点的焓值，hn为室内状态点的焓值，则计算送风量的公式：（）。
A:G＝Q/（hn-ho）（kg/h） B:G＝Q（hn-ho）（kg/h） C:G＝Q/（hn+ho）（kg/h） D:G＝Q（hn+ho）（kg/h）
下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题定1个最佳选项。
{{B}}第一篇{{/B}}
|
How to Start a Small Business in the
US
? ?People from other countries often take America
as the "land of opportunity". Americans, too, believe that the country gives no
end of chances to those who want to open their own businesses. Today, many
Americans are still trying hard to become small business people, although only
one out of two remains in operation after the first two years.
?
?Many people start their small businesses for the wrong reasons. They want
to get away from the paper work of their present jobs, or to exchange the
responsibility of their present jobs for free life styles. But more, not less,
paper work and responsibility come with ownership of a small business.
?
?Thomas is the owner of the news magazine Mother Earth, which is now quite
successful. He says that he had to work sixty hours without stopping when he was
trying to bring out the first issue.
? ?Thomas had waited for years
after he came up with the idea for Mother Earth. During that time, he collected
as much information as he could about his business. He borrowed books from the
library, talked to successful people in the field, and began planning carefully
the amount of money and the kinds and numbers of supplies he would need. When he
finally opened with a capital of $ 1,500 ,he set up his office in the kitchen
and his printing press in the garage. Owing to his devotion(投入)to business, his
talent, and his skill in management, Mother Earth now has a circulation(发行量) of
300,000.
? ?Not all small businesses are doing as fine as Mother
Earth as 50% of the 450,000 that start in America every year fail. Still, 95% of
businesses in the US can be called "small". Altogether these businesses amount
to 40% of America’s gross national
product(国民生产总值). |
What preparations did Thomas make before he started his business?
A:He stayed at home. B:He borrowed money from a bank. C:He made investigations and drew up a plan. D:He wrote a book.
What preparations did Thomas make before he started his business?
A:He stayed at home B:He borrowed money from a bank. C:He made investigations and drew up a plan D:He wrote a book.
单选集
