对工伤认定不予受理决定不服的,应当()。
A.先申请行政复议
B.直接提起行政诉讼
C.直接到法院起诉或申请行政复议
要到微信小程序或APP查看答案哦。
实在点不开答案,可以分享到微信,
在微信里面查看答案。
APP具体操作流程为:
如图所示,兰兰做有关声现象的实验时,将一个正在发声的音叉贴近面颊,目的是为了
A.感受发声音叉的振动
B.体验发声音叉的温度
C.估算发声音叉的质量
D.判断声音的传播速度
选择方框中的句子,补全对话。 | |
Mother: Did you get your report card today, Mary? Mary: Uh-huh. Mother: So, 1.________________ Mary: I did OK in some subjects. Mother: What did your history teacher say? Mary: He said 2. ________________ Mother: That's not so good. How about English? Mary: Oh, Mr Sun said 3. _______________ Mother: That's nice. Mary: And Ms Chen said 4._______________ Mother: What does he teach again? Mary: She's my maths teacher. Mother: That's excellent. 5._______________ Mary: Oh, well, science is very hard. Mother: Yes, but what did your teacher say? Mary: Umm…she said I was lazy. Mother: Oh, Mary! You'll have to try harder at science.
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下列关于物质的性质和用途的说法错误的是
A.氮气用来保护粮食,利用了氮气在常温下化学性质稳定的性质
B.制作霓虹灯时充入稀有气体,利用了稀有气体通电能发出不同颜色的光的性质
C.氧气用于火箭发射,利用了氧气的可燃性
D.氦气可用于飞艇,利用了氦气的密度小的性质
如图所示:小车沿倾角为θ的光滑斜面滑下,在小车的水平台面上有一质量为M的木块和小车保持相对静止,则( )
A.小车下滑时木块所受的摩擦力为Mgsinθcosθ
B.小车下滑时木块所受的支持力为Mg
C.小车受4个力作用
D.支持力对M不做功
本课程培训需要提交的作品有()。
A、1个。
B、2个。
C、3个。
D、4个。