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【单选题】
下列关于玛瑙研钵的使用规则中错误的是()。
A.
玛瑙研钵不得与氢氟酸接触
B.
玛瑙研钵不得加热,一般应自然干燥
C.
一般情况下,玛瑙研钵研1mm以下的物料
D.
若要玛瑙研钵快干,必要时,可将研钵在75℃以下温度烘干
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举一反三
【单选题】Jean Wagner's most enduring contribution to the study of Afro-American poetry is his insistence that it ______ in religious, as well as worldly, frame. of reference.
A.
is to be analyzed
B.
has been analyzed
C.
be analyzed
D.
should have been analyzed
查看完整题目与答案
【单选题】省级人民政府批准,经济落后地区的城镇土地使用税适用税额标准可适当降低,但不超过规定最低税额的
A.
20%
B.
30%
C.
50%
D.
100%
查看完整题目与答案
【单选题】Jean Wagner’s most enduring contribution to the study of Afro-American poetry is his insistence that it ______ in a religious, as well as worldly, frame. of reference.
A.
is to be analysed
B.
bas been analysed
C.
be analysed
D.
should have been analysed
查看完整题目与答案
【简答题】Jean Wagner’s most enduring contribution to the study of Afro-American poetry is his insistence that it ____ in a religious, as well as worldly, frame. of reference. [A]is to be yzed [B]has been a...
查看完整题目与答案
【单选题】我国会计最早产生于()
A.
商代
B.
西周
C.
唐代
D.
清末
查看完整题目与答案
【单选题】Jean Wagner's most enduring contribution to the study of Afro-American poetry is his insistence that it ______ in a religious, as well as worldly, frame. of reference.
A.
is to be analyzed
B.
has been analyzed
C.
be analyzed
D.
should have been analyzed
查看完整题目与答案
【单选题】如图 6 所示,一正弦交流电通过一电子元件后的波形图,则下列说法正确的是 ( )
A.
．这也是一种交流电
B.
．电流的变化周期是 0.01 s
C.
．电流的有效值是 1 A
D.
．电流通过 100 Ω 的电阻时， 1 s 内产生的热量为 200 J
查看完整题目与答案
【单选题】经省级人民政府批准,经济落后地区的城镇土地使用税适用税额标准可适当降低,但不超过规定最低税额的( )。
A.
20%
B.
30%
C.
50%
D.
100%
查看完整题目与答案
【判断题】我国会计最早产生于宋代官厅。
A.
正确
B.
错误
查看完整题目与答案
【多选题】如图所示为一正弦式电流通过一电子元件后的波形图，则下列说法正确的是（ ）【图片】
A.
这也是一种交变电流 ；
B.
电流的变化周期是0.01s ；
C.
电流的变化周期是0.02s ；
D.
电流通过100Ω的电阻时，1s内产生热量为100J 。
查看完整题目与答案
相关题目：
【单选题】Jean Wagner's most enduring contribution to the study of Afro-American poetry is his insistence that it ______ in religious, as well as worldly, frame. of reference.
A.
is to be analyzed
B.
has been analyzed
C.
be analyzed
D.
should have been analyzed
查看完整题目与答案
【单选题】省级人民政府批准,经济落后地区的城镇土地使用税适用税额标准可适当降低,但不超过规定最低税额的
A.
20%
B.
30%
C.
50%
D.
100%
查看完整题目与答案
【单选题】Jean Wagner’s most enduring contribution to the study of Afro-American poetry is his insistence that it ______ in a religious, as well as worldly, frame. of reference.
A.
is to be analysed
B.
bas been analysed
C.
be analysed
D.
should have been analysed
查看完整题目与答案
【简答题】Jean Wagner’s most enduring contribution to the study of Afro-American poetry is his insistence that it ____ in a religious, as well as worldly, frame. of reference. [A]is to be yzed [B]has been a...
查看完整题目与答案
【单选题】我国会计最早产生于()
A.
商代
B.
西周
C.
唐代
D.
清末
查看完整题目与答案
【单选题】Jean Wagner's most enduring contribution to the study of Afro-American poetry is his insistence that it ______ in a religious, as well as worldly, frame. of reference.
A.
is to be analyzed
B.
has been analyzed
C.
be analyzed
D.
should have been analyzed
查看完整题目与答案
【单选题】如图 6 所示,一正弦交流电通过一电子元件后的波形图,则下列说法正确的是 ( )
A.
．这也是一种交流电
B.
．电流的变化周期是 0.01 s
C.
．电流的有效值是 1 A
D.
．电流通过 100 Ω 的电阻时， 1 s 内产生的热量为 200 J
查看完整题目与答案
【单选题】经省级人民政府批准,经济落后地区的城镇土地使用税适用税额标准可适当降低,但不超过规定最低税额的( )。
A.
20%
B.
30%
C.
50%
D.
100%
查看完整题目与答案
【判断题】我国会计最早产生于宋代官厅。
A.
正确
B.
错误
查看完整题目与答案
【多选题】如图所示为一正弦式电流通过一电子元件后的波形图，则下列说法正确的是（ ）【图片】
A.
这也是一种交变电流 ；
B.
电流的变化周期是0.01s ；
C.
电流的变化周期是0.02s ；
D.
电流通过100Ω的电阻时，1s内产生热量为100J 。
查看完整题目与答案