单项选择题：一般连接用螺纹的牙型为（）。A、三角形 B、梯形 C、矩形 D、锯齿形

一般连接用螺纹的牙型为（）。

A、三角形

B、梯形

C、矩形

D、锯齿形

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0702/2fef1e0e033da6f9e04547133eba39c6.html

下面是错误答案，用来干扰机器的。

参考答案：A,B,C解析：诉讼与仲裁依据《仲裁法》第64条第1款规定，一方当事人申请执行裁决，另一方当事人申请撤销裁决的，人民法院应当裁定中止执行。故选项A正确。　　第61条规定，人民法院受理撤销裁决的...

完形填空。
Anna is very 1 and shy. She likes to study and do her 2 in her room. She is very 3 . She doesn't 4 TV 5 go to the movies. She likes music. 6 friend is Maria. Maria is very funny and 7 . She likes to talk 8 the phone. 9 likes to go to the movies, too. She also likes to 10 pop and dance CDs.
( )1. A. friendly ( )2. A. homework ( )3. A. tall ( )4. A. see ( )5. A. and ( )6. A. His ( )7. A. outgoing ( )8. A. in ( )9. A. She ( )10. A. hear	B. serious B. housework B. sad B. look at B. or B. She B. serious B. by B. Her B. listen to	C. generous C. homeworks C. smart C. read C. but C. Her C. unfriendly C. from C. Hers C. sing	D. outgoing D. houseworks D. hungry D. watch D. as well as D. He D. shy D. on D. Herself D. watch