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【单选题】
下列元素中,原子半径最接近的一组是: ( )
A.
Ne , Ar , Kr , Xe
B.
Mg , Ca , Sr , Ba
C.
B , C , N , O
D.
Cr , Mn , Fe , Co
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【单选题】As I was walking back home I_____an old friend I hadn't seen for ages.
A.
came along.
B.
came across.
C.
came over.
D.
came around
【单选题】中国移动的省内环网通常采用()和()系统混合组网方式
A.
SDH、DXC
B.
SDH、微波
C.
DWDM、SDH
D.
DWDM、DXC
【简答题】请编程,实现4个LED灯闪烁,时间分别是500ms,800ms,1200ms,1500ms. 要求拍录像上传,并报出学号和姓名
【简答题】One fine afternoon I was walking along the Fifth Avenue, when I remembered that it was necessary to buy a pair of socks.I 36 the first sock shop that caught my eye, and 37 , not more than 17, came for...
【单选题】In very high latitudes,the most practical chart projection is the ______.
A.
 Mercator
B.
Gnomonic
C.
Azimuthal
D.
Lambert conformal
【单选题】针对目标: 掌握 SDH、DWDM、PTN、全光网 技术等光纤通信网络新知识 。自己已达到的程度。
A.
10分
B.
9分
C.
8分
D.
7分
E.
6分
F.
6分以下
【单选题】针对目标: 掌握 SDH、DWDM、PTN、全光网 技术等光纤通信网络新知识 。 达到课程目标存在的困难
A.
想花时间学习,但是本学期开课太多
B.
上课听不懂,就不愿意学了
C.
缺少一本好的教材,看不懂教材
D.
不喜欢任课老师,就不喜欢学这门课
E.
教学方法不好,提不起学生的兴趣
F.
无困难
【单选题】While I was walking along the lake, I saw some fish out of the water.
A.
jumped                  
B.
jumping             
C.
to jump
【单选题】The OPA has very high gain, very high input impedance and _________output impedance.
A.
high
B.
low
C.
medium
D.
none of the above
【单选题】As _______ unemployment is very high at the moment, it’s very difficult for people to find _______ work.
A.
the, 不填
B.
不填,不填
C.
the, a
D.
an, the
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