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【判断题】
认证产品的单元划分原则是：在同一型号产品中，同一额定短时耐受电流等级为同一申证单元。A.
正确
B.
错误
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】______ he realized it was already too late for us to return home.
A.
No sooner it grew dark when
B.
Hardly it grew dark than
C.
It was not until dark that
D.
Scarcely it grew dark than
【单选题】______she realized it was too late to go home.
A.
No sooner it grew dark than
B.
Hardly did it grow dark that
C.
Scarcely had it grown dark than
D.
It was not until dark that
【单选题】______ she realized it was too late to go home.
A.
No sooner it grew dark than
B.
Hardly did it grew dark than
C.
Scarcely had it grew dark than
D.
It was not until dark that
【单选题】对下列基本概念，理解正确的一项是（）
A.
信息资源指的是电脑或网络上的文字和图片，课本和黑板上的字不属于信息资源
B.
只要在课程教学中运用信息技术，就一定比不用信息技术的教学效果好
C.
信息安全是指在信息领域中用来规范人们相互关系的思想观念与行为原则
D.
信息技术与课程整合，就是把信息技术地融合到各学科中去，建构有效的教学方式，利用信息技术促进教学的最优化
【单选题】__________ he realized it was too late to return home．A.No sooner it grew dark whenSXB
A.
__________ he realized it was too late to return home． A.No sooner it grew dark when
B.
It was not until dark that
C.
Scarcely it grew dark than
D.
While it grew dark that
【单选题】附合导线与闭合导线坐标计算不同之处在于（）。
A.
坐标增量计算；坐标增量闭合差计算
B.
坐标方位角的计算；角度闭合差的计算
C.
坐标方位角的计算；坐标增量的计算
D.
角度闭合差的计算；坐标增量闭合差的计算
【单选题】附合导线与闭合导线坐标计算不同之处在于( )。
A.
角度闭合差的计算；坐标增量闭合差的计算
B.
坐标方位角的计算；坐标增量的计算
C.
坐标增量计算;坐标增量闭合差计算
D.
坐标方位角的计算；角度闭合差的计算
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