【单选题】据2013年FAO公布的数据我国鸭的养殖数量占世界的比重约为( )
【单选题】三相交流对称负载作三角形联接时,相电流是 10A, 线电流与相电流最接近的值是( ) .
【单选题】Questions 16 to 20 are based on the following passage. It’s time to reevaluate how women handle conflict at work. Being overworked or over-committed at home and on the job will not get you where you...
A.
They struggle to satisfy the demands of both work and home.
B.
They are too devoted to work and unable to relax as a result.
C.
They do their best to cooperate with their workmates.
D.
They are obliged to take up too many responsibilities.
【单选题】对于跨高比不小于 5 的连梁 LLk ,上部受力纵筋中第一排非贯通筋在跨内的延伸长度从支座边算起为( )。
【简答题】质量数为 24 ,质子数等于中子数的原子: ____ ____ 。
【单选题】据2013年FAO公布的数据我国鸭的养殖数量占世界的比重约为( )
【单选题】关于n个并联电阻的特征描述,下列哪个叙述是正确的( )。
C.
等效电导Geq的数值要小于所并联的任一电导值
D.
并联电路端口总电流i的数值要小于所并联的任一电导上的电流值
【判断题】难以从活性炭中除去的挥发性有机物有丙烯酸乙酯、苯酚、丙酸、丁酸、戊酸等。