搜题请搜索小程序“爱下问搜题”
问题
单项选择题
在（）中取样是科学的油液取样方法.
A.进油管路
B.回油管路
C.油箱
D.油缸
答案
参考答案：B
判断题
根据图片判断下列句子正(√)误(×)。
( ) 1.
This is a bed.
( ) 2.
There are many books on the desk.
( ) 3.
It's a window.
( ) 4.
I can see two chairs.
( ) 5.
This is a door.
查看答案
问答题
《船舶安全检查记录薄》用完应在船上保存多少期限？
查看答案
This is a bed.
There are many books on the desk.
It's a window.
I can see two chairs.
This is a door.