【单选题】When the incinerator is stopped, which of the following is wrong?
A.
After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutes
B.
Close auxiliary burner firstly and then close main burner
C.
After stopping fuel, restoring the position of main fuel supply valve
D.
Stop blower as soon as stopping supplying fuel oil.
【单选题】在下列设备中,属于图形输入设备的是(6)。
【单选题】瑞典皇家科学院2009年10月7日宣布,三位分别来自英国、美国和以色列的科学家获得2009年诺贝尔化学奖.因他们在核糖体的结构和功能研究中做出突出贡献而获得该奖项.核糖体主要由蛋白质(40%)和RNA(60%)构成.则下列关于蛋白质的性质叙述正确的是( )
B.
通常用酒精消毒,其原理是酒精使细菌中的蛋白质变性而失去生理活性
C.
浓Na 2 SO 4 溶液能使溶液中的蛋白质析出,加水后析出的蛋白质又溶解,但已失去生理活性
【单选题】When burning diesel fuel, for safety reasons what should be kept in mind?
A.
Use large burner tip whenever possible.
B.
Fuel supply should not be cut off immediately.
C.
Immediately shut off fuel and vent furnace if there is an ignition failure.
D.
Blow more air into the furnace to assist burning.
【单选题】在微型计算机中,下列设备属于输入设备的是()。
【简答题】商品运输包装上的“no hook”属于( )。A. A.警告性标志 B.指示性标志 C.唛头 D.危险性标志
【单选题】在微型计算机中,下列设备属于输入设备的是( )。
【单选题】When the incinerator is stopped, which of the following is wrong?
A.
after stopping supplying sludge oil, the valve and pipe should be flushed by diesel oil and the incinerator continue burning for 10 minutes.
B.
close auxiliary burner firstly and then close main burner
C.
after stopping fuel, restoring the position of main fuel supply valve.
D.
stop blower as soon as stopping supplying fuel oil
【多选题】智慧供热是一种将传统热网物理系统和业务信息系统紧密结合的新型供热网,是实现( )的重要手段,同时也是建设好智慧城市的重要一环。