化学反应分为()和()
The pump has a constant stroke and the amount of fuel delivered is regulated by rotating () which has a specially arranged helical groove cut into it. the pump cylinder。 the pump cam。 the pump plunger。 the pump miler。
救生艇抢滩时,当艇一坐上岸滩,艇员应立即离艇。
构成生命要素的四大有机物大分子是:()、()、()和()
清机员可以向()办理自助设备尾箱现金的调入和缴回。 其他柜员现金尾箱。 出纳柜员现金尾箱。 本人现金尾箱。 自助设备现金尾箱。
A precaution you should take before bunkering is to () .