渗透探伤前，零件表面的油脂不主张采用哪种方法去除？（）A、蒸_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

渗透探伤前，零件表面的油脂不主张采用哪种方法去除？（）

A、蒸汽除油

B、碱性清洗剂清洗

C、溶剂清洗

D、热水清洗

答案

参考答案：D

辨音题

Read and choose. 选出一个画线部分发音不同于其他的单词。

( ) 1. A. sheep
( ) 2. A. doctor
( ) 3. A. make
( ) 4. A. three
( ) 5. A. is

B. be
B. door
B. cake
B. there
B. nice

C. bread
C. hot
C. play
C. thank
C. books

D. read
D. orange
D. have
D. fourth
D. yes

选择题

－We will have a school trip next week. 　

－_____. [ ]

A. Have a good time

B. We will

C. I'm happy to hear it

D. Don't forget it