套圈作业可训练
A.肘关节屈伸
B.上肢前方伸展
C.平衡能力
D.以上均对
E.以上均不对
参考答案:D
解析:套圈作业可训练可改善肘关节屈伸、平衡能力、上肢前方伸展等上肢功能。
根据图片完成下列句子。
1. Li Hua yesterday.
2. —Did Daming _ _last night(昨天晚上)?
—Yes, he .
3. —What did he do yesterday?
—He .
4. Mr Brown lots of two days ago.
5. Two years ago,Xiao Ming _
Now he goes to school
6. Mr Wang was a teacher. He _ Chinese.
Now he (退休).
7. —What did Fanfan do on Sunday?
—She
8. —What is Xiao Hong _ now?
—She _ now.
如图所示是内燃机在工作过程中的能量流向图,从中我们可以看出它的能量损失所占的百分比.若废气的内能占35%,散热损失占30%,机械损失占10%,则内燃机的热机效率是______.