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【简答题】
Choose the words or expressions and complete the passage Exam time is the most stressful (最有压力的) period of the year. You’ve worked all the term on your classes and now it’s the time to prove what you have learned. With so much at stake, it is easy to get stressed about your exams. However, with the right amount or hard work and focus you can pass your tests 1 ! When I was in school, I used to get very stressed over my examinations. So did my friends. Some people stopped eating and others ate too much! Some 2 and others burned themselves out! The most important thing to remember when studying is not to panic! Take the middle path---stay calm, eat healthy food and get your rest. Stressing out and _3___ yourself too hard is just as dangerous as not studying enough. A tired, overworked brain is just as useless as a stupid, empty one! So, what do you do? Set aside a time each day for study and a time For __4 . You may have less time to relax than usual, but you still need to let your brain rest for a few moments. Get plenty of sleep. If you are _ 5 , information will not stick in your memory. Finally, eat healthy food that fuels your body and mind. It does no good to look at your exams like the rest of your life 6 them. Instead, just view them as another obstacle (障碍物) you will overcome. You have overcome all kinds of obstacles in your life so far. With the right amount of work and focus, you will pass your examinations with flying colors! High school is right around the corner. 小题1: A.quickly B.carefully C.easily D.importantly 小题2: A.got off B.gave up C.took up D.put off 小题3: A.moving B.encouraging C.pushing D.enjoying 小题4: A.learning B.relaxation C.sleep D.sports 小题5: A.tired B.excited C.satisfied D.terrified 小题6: A.looks on B.puts on C.depends on D.sits on
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参考答案:
举一反三
【多选题】下列哪种原因引起的缺氧表现为PaO2正常
A.
一氧化碳中毒
B.
呼吸衰竭
C.
亚硝酸盐中毒
D.
氰化物中毒
【单选题】苦味药的不良作用
A.
伤阳
B.
敛邪
C.
伤津
D.
耗气
【单选题】经典控制理论是以( )为基础,主要研究单输入单输出、线性定长系统的分析和设计问题。
A.
传递函数
B.
状态方程
C.
微分方程
D.
线性方程
【多选题】五味的不良作用有( )。
A.
甘味能腻膈碍胃
B.
酸、涩味药大多能敛邪
C.
辛味能耗气伤阴
D.
苦味能伤津伐胃
E.
淡味能伤阳
【判断题】经典控制理论主要是以线性微分方程为基础,研究单输入单输出系统的分析和设计问题。
A.
正确
B.
错误
【简答题】若你利用变动投入劳动L和固定投入资本K生产一种产品Q,其周生产函数为 Q=29.6L+0.5L2-0.002L3 你正考虑一项投资购买新设备,以扩大固定投入,周生产函数也将变为 Q=36L+O.6L2-0.002L3 当你知道劳动的边际产量和产品价格的积等于工资时,你的利润最大化。目前周工资为54元,产品价格为1.5元,新设备折合每周固定成本为6500元,这项决策合适吗? 在购买新设备后,发生新情...
【单选题】下列哪一种原因引起的缺氧表现为PaO2降低( )
A.
CN-中毒
B.
CO中毒
C.
法乐氏四联症
D.
VitB严重缺乏
E.
NO3~中毒
【单选题】晶闸管直流调速系统方框图如图所示,左边方框是PI调节器校正传递函数,右边方框是系统固有部分传递函数。输入信号为单位阶跃信号,step time=0s,仿真解算器为ode23tb,仿真时间为0.5s。比较校正前后系统的性能指标,以下选项错误的是
A.
校正前后系统的稳态误差均为0
B.
校正前后阶跃响应的峰值时间都在0.05s以内
C.
校正前后系统都是稳定系统
D.
校正之后的阶跃响应超调量小于校正之前的阶跃响应超调量
【判断题】经典控制理论主要是研究单输入—单输出线性定常系统的控制理论。
A.
正确
B.
错误
【单选题】脚上穿勾尖绣花鞋,俗称“云云鞋”。这是对( )服饰特点的描述。
A.
彝族
B.
藏族
C.
羌族
D.
苗族
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