如图所示，甲、乙两根钢棒，若用甲棒的A1端靠近乙棒的A2端时，有吸引作用；若用甲

检测发动机气缸时，其各缸直径之差不得超过（）。

A.25mm

B.5mm

C.75mm

D.10mm

用所给词的适当形式填空

小题1:I like Love Me Once More, Mom. It’s so __________(move)

小题2:It’s very important for you _________( listen) to your teachers carefully in class.

小题3:I couldn’t fall __________( sleep) because it was too noisy outside.

小题4:These stories end with _________(happy) and laughter.

小题5:Before making an important ____________ (decide ), think it over.

小题6:She was very sad because of her grandmother’s __________ (die).

小题7:The bicycle needs ___________ (little) space.

小题8:Beth, you don’t need ____________ (send) the letter by post. You can do it by e-mail.

人寿保险属于( )

A．强制性保险
B．自愿性保险
C．法定保险
D．医疗保险

回柱工可进入采空区和无支护区作业。

以“宁滥勿缺”的思维去利用（）的大数据，才能挖掘出与众不同的利润“金矿”。

A、精确性高或非结构化

B、精确性低或非结构化

C、精确性高或结构化

D、精确性低或结构化