皮皮学，免费搜题
登录
搜题
【单选题】
直流电动机常用的启动方法有电枢串电阻启动、( )等。
A.
弱磁启动
B.
降压启动
C.
Y 一 △ 启动
D.
变频启动
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Paragraph 3__________ 查看材料 A.A. Popularity of Science Fiction
B.
A Fairly New Development
C.
Classics of Science Fiction
D.
Difficulty in Keeping ahead of Scientific Adventure
E.
Its Origin
F.
Themes of Modern Science Fiction
查看完整题目与答案
【单选题】管理审计的基本职能是
A.
管理审计的基本职能是
B.
经济评价
C.
鉴证
D.
风险评价
查看完整题目与答案
【单选题】审计的基本职能是
A.
监督
B.
鉴定
C.
证明
D.
评价
查看完整题目与答案
【判断题】经济评价职能是审计的最基本职能
A.
正确
B.
错误
查看完整题目与答案
【单选题】It is a curious ______ that we think of the physical sciences as 'hard', the social sciences as 'soft', and the biological sciences as somewhere in between.
A.
analogy
B.
paradox
C.
dilemma
D.
illusion
查看完整题目与答案
【单选题】Which of the following is NOT mentioned as a kind of serious programs?
A.
Programs of science.
B.
Programs of medicine.
C.
Programs of art.
D.
Programs of history.
查看完整题目与答案
【简答题】旧版现代西班牙语第一册p.113 练习VI
查看完整题目与答案
【单选题】‍ 已知 在各电阻的电压参考方向均为一致的情况下,3个串联电阻上的电压分别为 U R1 =10V , U R2 =8V , U R3 =6V ,串联电路的总功率为 P=48W ,则对应三个电阻的阻值分别为 ( )。 ‍
A.
R1=5Ω，R2=4Ω，R3=3Ω。
B.
R1=4.8Ω，R2=6Ω，R3=8Ω。
C.
R1=6Ω，R2=2Ω，R3=3Ω。
D.
R1=3Ω，R2=4Ω，R3=5Ω。
查看完整题目与答案
【单选题】已知Us=3V，IS=2A，R1=6Ω，R2=9Ω，当单独Us作用时，流过电阻R2的电流为 。【图片】
A.
0.4A ‍
B.
1A
C.
0.8A
D.
0.2A
查看完整题目与答案
【单选题】The physicist has made a discovery, _________of great importance to the progress of science and technology.
A.
I think which is
B.
that I think is
C.
which I think is
D.
which I think it is
查看完整题目与答案
相关题目：
【单选题】Paragraph 3__________ 查看材料 A.A. Popularity of Science Fiction
B.
A Fairly New Development
C.
Classics of Science Fiction
D.
Difficulty in Keeping ahead of Scientific Adventure
E.
Its Origin
F.
Themes of Modern Science Fiction
查看完整题目与答案
【单选题】管理审计的基本职能是
A.
管理审计的基本职能是
B.
经济评价
C.
鉴证
D.
风险评价
查看完整题目与答案
【单选题】审计的基本职能是
A.
监督
B.
鉴定
C.
证明
D.
评价
查看完整题目与答案
【判断题】经济评价职能是审计的最基本职能
A.
正确
B.
错误
查看完整题目与答案
【单选题】It is a curious ______ that we think of the physical sciences as 'hard', the social sciences as 'soft', and the biological sciences as somewhere in between.
A.
analogy
B.
paradox
C.
dilemma
D.
illusion
查看完整题目与答案
【单选题】Which of the following is NOT mentioned as a kind of serious programs?
A.
Programs of science.
B.
Programs of medicine.
C.
Programs of art.
D.
Programs of history.
查看完整题目与答案
【简答题】旧版现代西班牙语第一册p.113 练习VI
查看完整题目与答案
【单选题】‍ 已知 在各电阻的电压参考方向均为一致的情况下,3个串联电阻上的电压分别为 U R1 =10V , U R2 =8V , U R3 =6V ,串联电路的总功率为 P=48W ,则对应三个电阻的阻值分别为 ( )。 ‍
A.
R1=5Ω，R2=4Ω，R3=3Ω。
B.
R1=4.8Ω，R2=6Ω，R3=8Ω。
C.
R1=6Ω，R2=2Ω，R3=3Ω。
D.
R1=3Ω，R2=4Ω，R3=5Ω。
查看完整题目与答案
【单选题】已知Us=3V，IS=2A，R1=6Ω，R2=9Ω，当单独Us作用时，流过电阻R2的电流为 。【图片】
A.
0.4A ‍
B.
1A
C.
0.8A
D.
0.2A
查看完整题目与答案
【单选题】The physicist has made a discovery, _________of great importance to the progress of science and technology.
A.
I think which is
B.
that I think is
C.
which I think is
D.
which I think it is
查看完整题目与答案