【单选题】Which statement about entry into a water ballast tank that has been sealed for a long time is TRUE?
A.
After ventilation and testing, and the tank is found safe for entry, someone should stand by at the tank entrance while you are inside
B.
A buddy system should be used where someone enters the tank with you
C.
Sea water acts on the ship’s metal and generates chlorine gas which may accumulate in poisonous quantities
D.
You should always wear gas mask
【判断题】理想电路元件是指有某种特定的电磁性能的理想元件。
【单选题】下列作用中巴比妥类具有而苯二氮䓬类没有的是
【判断题】在一定的条件下,用来模拟实际电路中器件主要电磁性能的理想化的模型,称为理想电路元件。常见的理想电路元件主要有电阻元件、电感元件、电容元件和电源元件等。
【简答题】叙述理想电路元件及电路模型的定义?常见的理想元件有哪几种?
【多选题】依据《地下防水工程质量验收规范》(GB50208-2011)4.1.16防水混凝土结构的()设置和构造必须符合设计要求。
【单选题】What size segment will be allocated for a 39 KB request on a system using the Buddy system for kernel memory allocation?
【多选题】防水混凝土的( )等设置和构造,均须符合设计要求,严禁有渗漏。
【单选题】在正常人血清蛋白质醋酸纤维薄膜电泳图谱中泳动最快的是()()