大客车乘客门框对角线长度应不大于()毫米。
A、6
B、10
C、14
参考答案:A
In 1911, Madame Curie received a second Nobel Prize for her research, the first person
in the world _____ two Nobel Prizes. [ ]
A. receiving
B. received
C. to receive
D. being received
下列描述,错误的是
A.一定条件下,Cl2可在甲苯的苯环或侧链上发生取代反应
B.光照下2,2二甲基丙烷与Br2反应,其一溴取代物只有一种
C.乙烷和丙烯的物质的量共1 mol,完全燃烧生成3 mol H2O
D.次氯酸钠溶液中通入CO2生成次氯酸,则碳酸的酸性比次氯酸弱