【判断题】洗滴定管时,如有明显油污,则需用洗液浸洗。洗涤时向管内倒入 10mL 左右铬酸洗液(碱式滴定管将乳胶管内玻璃珠向上挤压封住管口或将乳胶管换成乳胶滴头),再将滴定管逐渐向管口倾斜,并不断旋转,使管壁与洗液充分接触,管口对着废液缸,以防洗液撒出。若油污较重,可装满洗液浸泡,浸泡时间的长短视沾污情况而定。
【简答题】(embroil, appalled, embark, toxic, nourish, rejuvenate, facet, hipster, shun, reclusive) Victims of the disease found themselves ( ) by society.
【单选题】人生三境界:___,才能览物于胸;___,才能洞若观火;___,才能超然物外。此三重境界,形影交错,亦梦亦境,需反复思虑,不断探索,才能冲破重天驾驭人生。填入划横线部分最恰当的一项是( )。
【判断题】销售百分比法最关键的环节是确定敏感性项目。
【单选题】共用针具注射吸毒的成瘾者容易得艾滋病。这种说法正确吗?
【简答题】(embroil, appalled, embark, toxic, nourish, rejuvenate, facet, hipster, shun, reclusive) I became ( ) in a quarrel with the driver.
【单选题】机体缺乏内因子导致巨幼红细胞性贫血,是由于
【简答题】(embroil, appalled, embark, toxic, nourish, rejuvenate, facet, hipster, shun, reclusive) She felt ( ) by the love of her husband.
【简答题】(embroil, appalled, embark, toxic, nourish, rejuvenate, facet, hipster, shun, reclusive) The cost of cleaning up ( ) waste is quite high.