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【判断题】
为保证斜楔夹紧机构可靠工作,斜楔夹紧工件后自锁。A.
正确
B.
错误
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【简答题】A World Cup Dad For most of my 15 years， my father usually said very little to my mother and me. He preferred reading the newspaper or watching football matches on television to talking to his family....
【单选题】在如图所示的电路中，E为电源，其内阻为r，L为小灯泡（其灯丝电阻可视为不变），R1、R2为定值电阻，R3为光敏电阻，其阻值大小随所受照射光强度的增大而减小，V为理想电压表。若将照射R3的光的强度减弱，则（ ）。
A.
电压表的示数变大
B.
通过R2的电流变小
C.
小灯泡消耗的功率变小
D.
电源内阻消耗的电压变大
【单选题】My father is usually on ______ duty in his office every ______ few days. [ ]
A.
the; a
B.
/; /
C.
/; a
D.
a; /
【单选题】商业模式由很多要素组成，以下属于商业模式要素的有哪些：①客户关系;②公司核心能力;③价值主张;④合作伙伴网络;⑤价值配置。
A.
①⑤
B.
①③⑤
C.
①③④⑤
D.
①②③④⑤
【单选题】World Cup Dad For most of my 15 years, my father usually said very little to my mother and me. He preferred reading the newspaper or watching football matches on television to talking to his family. E...
A.
A parent busy at work.
B.
A man of few words.
C.
An encouraging father.
D.
A talkative football player.
【单选题】某乡镇企业(地处农村)三月份应缴纳增值税6万元，营业税2万元，则该乡镇企业当月应纳城市维护建设税为( )。
A.
200元
B.
400元
C.
600元
D.
800元
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