经济可纺支数:一般精纺毛纱截面内应保持30~40根羊毛纤维,粗纺毛纱截面内应保持()根羊毛纤维,如纤维根数过少,必将增加断头率,影响纱的条干。
参考答案:120~134
Although the soldier was quite thirsty, he didn't drink the water________ in the bottle.
A.brought
B.contained
C.included
D.concluded
在被挂车辆距前方警冲标不足30m时,必须()才能连挂。
A.采取防溜
B.设专人防护
C.与有关人员联系,开通前方进路
D.严格控制速度