【单选题】The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the ().
A.
quantity of fuel to be received
B.
flash point of the fuel as it is received
C.
fuel temperature as it is received
D.
viscosity of the fuel being received
【单选题】Re-circulating the fuel when the engine is stopped can______.①keep the fuel at the correct viscosity ②cool the injector
【简答题】男性,35岁,贫血已半年,经各种抗贫血药物治疗无效。肝肋下2cm,脾肋下1cm,浅表淋巴结未及。血象:RBC2.30×10 /L,Hb70g/L,WBC3.5×10 /L,白细胞分类可见早幼粒细胞为2%,中性分叶核细胞呈Pelger畸形,PLT46×10 /L。骨髓增生明显活跃,原始粒细胞为2%,早幼粒为4%,红系有巨幼样变,可见小巨核细胞。骨髓铁染色,细胞外铁为(+++),铁粒幼细胞为48%,环...
【单选题】在学生课程管理中分别使用以下二种表示,即: (1)表SC(学号,姓名,课程号,课程名,学时,学分,成绩); (2)表STUDENT(学号,姓名,课程号)和表COURSE(课程号,课程名,学时,学分,成绩)。 则以下叙述正确的是( )。
【判断题】北京社稷坛是帝王祭祀土地神和粮食神的地方,位于天安门东侧,与太庙左右对称。( )
【判断题】II级故障现象为整个系统完全处于瘫痪状态,不能运行
【判断题】II级故障现象为整个系统处于完全瘫痪状态,不能运行。( )