原位杂交中使用的洗涤缓冲液,遵循以下哪项共同原则?() ["盐浓度由低到高,而温度也由低到高","盐浓度和温度对杂交结果无明显影响","盐浓度由高到低,而温度也由高到低","盐浓度由低到高,而温度则由高到低","盐浓度由高到低,而温度则由低到高"]
属于合成高分子防水卷材的是() ["三元乙丙防水卷材","SBS防水卷材","APP防水卷材","石油沥青防水卷材"]
下列关于清漆喷涂的注意事项,叙述正确的有()。 ["需喷涂2~3层","喷枪距离为20cm","气压为1.2~1.5MPa","每层的闪干时间为3min"]
饭店客房中布草存放采用()。 ["五五成形","四四定位","五五摆放","四号定位"]
在发达国家以营养过剩为主的营养性疾病包括()。 ["缺铁性贫血和佝偻病","缺铁性贫血和肿瘤","糖尿病和痛风","糖尿病和夜盲症","地中海贫血和艾滋病"]
成型机装置的加工量是4520吨,耗电1823.78度,耗淡水2630吨,耗3Kg蒸汽3817吨,求耗能单耗?