【单选题】某反应的活化能为300 kJ·mol -1 ,在T = 300K时温度每增加1K,反应速率常数k约增加( ).
【单选题】China's financial and insurance companies ( ) too much of the tax burden.中国的金融和保险企业承担了过重的税务负担。
【单选题】Another good title for this passage would be
A.
Robots: Taking the Place of Humans.
B.
Artificial intelligence Programs.
C.
Today's Robots and How They Function.
【单选题】Large amounts of food imports placed a great strain ( 沉重负担 ) on the country ’ s gold ______.
【单选题】— Do remember to send the letter to Tom. — Yes, _____. [ ]
【单选题】Another good title for this passage would be
A.
Robots:Taking the Place of Humans.
B.
Artificial Intelligence Programs.
D.
Today'S Robots and How They Function
【简答题】已知某反应在 370 K 时的反应速率为 300 K 时的 4 倍,则该反应的活化能为_____ kJ · mol -1 。
【单选题】They help ease the burden of our growing population on Earth.
B.
它们帮助减轻我们日益增长的人口对地球造成的负担。
【单选题】下列哪一(些)项属于询问—应答式协议? I.私钥密码技术Ⅱ.公钥密码技术
【多选题】“杀菌”蔬菜中含有丰富的广谱杀菌素,对各种球菌、杆菌、真菌病毒都有杀灭和抑制作用。下列哪些蔬菜属于“杀菌”蔬菜( )