皮皮学，免费搜题
登录
搜题
【单选题】
斜齿圆柱齿轮重合度随螺旋角的增大而（ ）。A.
增大
B.
减小
C.
不变
D.
不确定
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】使同磁极下的导体边流过的电流方向不变,导体受力方向不变,进而产生方向恒定的电磁转矩,使电机连续转动,是下列哪个部件的作用( )。
A.
电刷
B.
电枢绕组
C.
换向器
【单选题】The development of the light bulb __ partly as a result of the widespread availability of electricity and the need for cheap, cicada light.
A.
occurring
B.
was occurring
C.
was occurred
D.
occurred
【单选题】The light bulb ______ by Edison in the middle of the 1780s.
A.
is invented
B.
was invented
C.
invented
D.
invent
【单选题】Alight with no more power than ______ by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized beam.
A.
as is produced
B.
that produced
C.
that is produced
D.
produced
【单选题】使同磁极下的导体边流过的电流方向不变,导体受力方向不变,进面产生方向恒定的电磁转矩,使电机连续转动,是下列哪个部件的作用( )。
A.
电刷
B.
电枢绕组
C.
换向器
【简答题】Edison invented the light bulb many years ago（改为被动语态） The light bulb__________ __________by Edison many years ago．
【单选题】With a standard bulb, only 5% of the electricity is ______to light—the rest is wasted away as heat.
A.
compressed
B.
conformed
C.
converted
D.
confined
【单选题】心肺复苏基本生命支持术的三步骤包括
A.
胸外心肺按压，开放气道，人工呼吸
B.
病情估计，人工呼吸，人工循环
C.
人工呼吸，人工循环，药物治疗
D.
人工呼吸，人工循环，脑复苏
E.
开放气道，人工呼吸，心脏除颤
【简答题】灯泡 light bulb
相关题目：