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【简答题】
阅读下面短文 , 在空白处填入 1 个适当的单词或括号内单词的正确形式。 Nowadays many singers and bands have little to do with good music. They know little about 1. ____________ good music means. What is the cause? So far most of these singers 2. ____________ (see) music as a “job” because it is a good source of making money. And if you have a good appearance and expensive clothes to show off at your concerts then your voice is not 3.____________ important as it should be. The public will prefer to admire the most interesting parts of your body and even forget that you are there 4.____________ (show) your music skills, not your dancing, which is important too, but not at such a high level. Therefore, many young girls on TV choose to wear the most provocative ( 挑逗的 ) clothes to catch attention, but when it comes to 5. ____________ (sing) , they are in a complete mess and one doesn ’ t need to have an ear for music to notice their lack 6. ____________ talent. However, the young generation should understand talent and a good voice matter more in their musical career. All the performances 7.____________ have little to do with good music fail to 8.____________ (welcome) on stage. If a young man has a great voice and wants to become a 9.____________ (success) singer, he should take some special 10. ____________ (course) in this area because they will help him improve singing abilities.
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【单选题】巴比妥类药物构效关系表述正确的是( )。
A.
R1的总碳数1~2最好
B.
R2以乙基取代起效快
C.
若R(R1)为H原子,仍有活性
D.
R(R1、R2)应为2~5碳链取代,或有一为苯环取代
【单选题】巴比妥类药物构效关系表述正确的是
A.
R 1 的总碳数 1~2最好
B.
R(R 1 )应为2~5碳链取代,或有一为苯环取代
C.
R 2 以乙基取代起效快
D.
R(R 1 )为H原子,仍有活性
E.
1 位的氧原子被硫取代起效慢
【判断题】异步电机气隙较直流电机的小,其目的是降低电机的励磁电流,提高电机的功率因数。
A.
正确
B.
错误
【单选题】巴比妥类药物构效关系表述正确的是()。
A.
R 1 的总碳数1~2最好
B.
R(R 1 )应为2~5碳链取代,或有一位苯环取代
C.
R2以乙基取代起效快
D.
若R(R 1 )为H原子,仍有活性
E.
1位的氧原子被硫取代起效慢
【简答题】一章三节 行业业态 ( )是 针对不同消费者的不同需求,按照既定的战略目标,有选择地运用商品结构、店铺位置、店铺规模、店铺形态、 价格政策 、销售方式、销售服务等经营手段,提供销售和服务的类型化服务形态。
【简答题】当松开按钮后,接触器通过自身的辅助常开触头使其线圈保持得电的作用叫( )。
【单选题】巴比妥类药物构效关系表述正确的是
A.
R1的总碳数1~2最好
B.
R(R1)应为2~5碳链取代,或有一为苯环取代
C.
R2以乙基取代起效快
D.
若R(R1)为H原子,仍有活性
E.
1位的氧原子被硫取代起效慢
【简答题】当启动按钮松开后,接触器通过自身的辅助常开触头使线圈保持得电的作用叫做( )
【单选题】一般情况下收缩压的高低主要反映()
A.
每搏排出量大小
B.
心率快慢
C.
外周阻力大小
D.
主动脉和大动脉的顺应性
E.
循环血量和血管系统容量的比例
【简答题】当松开按钮后,接触器通过自身的( )触头使其线圈保持得电的作用叫自锁。
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