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【简答题】
v. 屏蔽;阻止;限制
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举一反三
【简答题】可以导入flash的声音文件类型包括________、________、________(写出3种)
【单选题】在某施工场地上,已知水准点高程为50.00米,设计高程为53.348米,若已知水准点水准尺读数为4.368米,在设计高程面上水准尺读数为
A.
1.020米
B.
1.202米
C.
2.302米
【单选题】已知水准点高程为 H A =75.413米,该点水准尺读数为α=1.514米,放样点高程为H B =75.828米,则放样点的水准尺读数为( )。
A.
1.514
B.
76.927
C.
74.314
D.
1.099
【单选题】Order-getting salespeople are primarily required for ( ).
A.
helping a buyer plan and install a computer and software for use as a website server.
B.
helping drug retailers figure out better ways to display and promote their products.
C.
seeking orders from supermarket buyers for a new brand of high protein diet supplement that has been added to a company's line.
D.
helping an indecisive customer in a supermarket select the kind of meat she should buy for dinner.
E.
receiving orders from regular or established customers and processing the orders for production.
【简答题】紫外线属于电磁波的一种,按照波长不同分为三类,分别是___、___、____。
【单选题】已知水准点高程为1107．531m，现利用该点放样绝对高程为1107．931m 的±0点，且已知水准点标尺读数a=1．500m，则b应为（）。
A.
1.200m
B.
1.900m
C.
1.100m
D.
1.500m
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