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【简答题】
E—schoolbags Is your schoolbag too heavy to carry? The e-schoolbag will help you. It is said that e-schoolbags are going to be brought into use in Chinese middle schools soon. Heavy schoolbags have been a serious problem for a long time. But the e-schoolbag will work it out. An e-schoolbag is much lighter than a usual schoolbag. Perhaps, the e-schoolbag should be called an e-textbook. It is as small as a usual book, but it can still have all the things for study, such as a textbook, an exercise book and so on. They can be made into chips(芯片) like stamps. The students can read the text page by page on the screen, take notes, or even send e-mails to their teachers. They only need to put the right chip into the e-schoolbag and then the students can use it. Some people say that e-textbooks can be easily broken, while others say it is not good to student’s eyes. But only time will tell. 小题1:What is the e-schoolbag used for ? It can’t help students _________. A.take notes B.send e-mails C.lighten(减轻) the schoolbag D.read the text in the paper book 小题2:What’s the e-school like? A.It’s bigger than a usual book. B.It’s just as big as a usual book. C.It’s as big as a stamp. D.It’s not as small as a usual book. 小题3:How can e-schoolbags have all the things for study? A.They are made into stamps B.They are made into chips. C.They are called e-textbooks D.They put the books into e-schoolbags. 小题4:Which statement is NOT true according to the passage? A.That e-schoolbags may be easily broken B.It may not be good to student’s eyes. C.They have been into use in school in China. D.The e-schoolbag will solve the problem of the heavy schoolbags.
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【判断题】某企业向当地海关申报进口一批烤面包机,货物已运抵海关监管区内的仓库,海关根据情报,在没有通知该公司的情况下,由仓库人员陪同对这批货物进行了查验,发现该批货物是高档音响器材。该企业以海关查验时报关员不在场为由,拒绝承认查验结果。因此,当地海关不得以此对其进行处罚。
A.
正确
B.
错误
【单选题】以下关于 电流型逆变电路及特点叙述错误的是( )
A.
直流侧是电流源的逆变电路称为电流型逆变电路。
B.
特点: 1 )直流侧并联大电容,直流侧电压基本无脉动,直流回路呈现低阻抗;
C.
特点: 2)交流侧输出电流为矩形波,并且与负载阻抗角无关,而交流侧输出电压波形和相位则因负载阻抗情况的不同而不同;
D.
特点: 3)开关器件不并联反馈二极管。
【单选题】某企业向当地海关申报进口一批烤面包机,货物已运抵海关监管区内的仓库。海关根据情报,在没有通知该企业的情况下,由仓库人员陪同对这批货物进行了查验,发现该批货物是高档音响器材。该企业以海关查验时报关员不在场为由,拒绝承认查验结果。因此.当地海关不得以此对其进行处罚。( )
A.
正确
B.
错误
【判断题】隶书 隶书是出现于战国,形成于秦代,在民间广泛流传的一种字体.秦代的一些下层办事人员,为了省时、快速,在抄写东西时不完全按照小篆的笔画、结构书写汉字,从而逐渐形成了一种新字体
A.
正确
B.
错误
【简答题】某企业向当地海关申报进口一批烤面包机,货物已运抵海关监管区内的仓库。海关粮据情报,在没有通知该企业的情况下,由仓库人员陪同对这批货物进行了查验,发现该批货物是高档音响器材。该企业以海关查验时报关员不在场为由,拒绝承认查验结果。因此,当地海关不得以此对其进行处罚。 ( )
【单选题】外源化合物经消化道吸收的主要方式是
A.
通过营养物质作为载体
B.
滤过
C.
简单扩散
D.
载体扩散
【单选题】逆变电路的直流侧电源是电压源的电路称为()。
A.
电流源型逆变电路
B.
电压源型逆变电路
C.
电源型逆变电路
【简答题】外源化合物经消化道吸收的主要方式是( )。
【单选题】以下关于 电压型逆变电路及特点叙述错误的是( )
A.
直流侧是电压源的逆变电路称为电压型逆变电路。
B.
特点: 1 )直流侧为电压源或并联有大电容,直流侧电压基本无脉动,直流回路呈现低阻抗;
C.
特点: 2 )交流侧输出电压波形为矩形波,并且与负载阻抗角无关, 而交流侧输出电流波形和相位则因负载阻抗情况的不同而不同 ;
D.
特点: 3 )逆变桥各臂不并联反馈二极管。
【简答题】某企业向当地海关申报进口一批烤面包机,货物已运抵海关监管区内的仓库。海关根据情报,在没有通知该企业的情况下,由仓库人员陪同对这批货物进行了查验,发现该批货物是高档音响器材。该企业以海关查验时报关员不在场为由,拒绝承认查验结果。因此.当地海关不得以此对其进行处罚。( )
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