【单选题】【消耗次数：1】
焊接时，为防止铁水下流，焊条直径一般不超()
①
1mm
②
2mm
③
10mm
④
4mm
参考答案：
复制
纠错
相关题目
【单选题】
塑料排水带的宽度为100mm，厚度为5mm，则其当量换算直径（换算系数取1.0）为（）。
①
25.2mm；
②
66.8mm；
③
33.4mm；
④
50.4mm；
【单选题】
若线切割机床的单边放电间隙为0.02mm，钼丝直径为0.18mm，则加工圆孔时的间隙补偿量为( )。
①
0.10mm
②
－0.11mm
③
0.20mm
④
都不是
随机题目
【单选题】
Helen, if someone comes to see me this morning, ask him to leave a_____. ?
①
word ?
②
notice ?
③
message ?
④
mail ?
【单选题】
28. If it ____ fine tomorrow, we will go skating.
①
will be
②
is to be
③
is going to be
④
is
【单选题】
She
doesn’t speak ____ her friend, but her written work is excellent.
①
as
well as
②
so often as
③
so
much as
④
as
good as
【单选题】
21. Thinking that you know ____ in fact you don’t is a disastrous mistake.
①
what
②
that
③
when
④
however
【单选题】
I really appreciate ____ to help me, but I am sure that I can manage by myself.
①
you to offer
②
that you offer
③
your offering
④
that you are offering
【单选题】
Half of the money____ your brother. ?
①
belong to ?
②
belong ?
③
belongs to ?
④
belongs?
【单选题】
25. A pilot should be responsible ____ the safety of all the passengers on board.
①
against
②
for
③
at
④
with
【单选题】
After ten years, all these youngsters became____.
①
grown-up
②
grown-ups
③
growns-ups
④
growns-up
【单选题】
We’ll go out as soon as I’ve ____ the kitchen.
①
sent for
②
cleaned up
③
done with
④
worked out