【单选题】关于放射性活度的国际制单位,以下描述正确的是
A.
放射性活度的国际制单位是居里(Ci),1Ci=3.7× 10^10 Bq
B.
放射性活度的国际制单位是居里(Ci),1Ci=2.703×10^-11Bq
C.
放射性活度的国际制单位是贝可(Bq),1Bq= 3.7× 10^10 Ci
D.
放射性活度的国际制单位是贝可(Bq),1Bq= 2.703×10^-11 Ci
【单选题】听力原文:W: I need your help, John, I feel very nervous whenever speaking in the presence of many strangers. Do you know how to overcome this? M: Me too. Take it easy. I consider it a natural human respon...
A.
She should follow the human nature.
B.
Strangers are nothing to be afraid of.
C.
Feeling nervous is nothing improper.
D.
She should accept strangers' presents naturally.
【单选题】水溶液或酊剂外用有明显的止汗和收敛作用,40%的水溶液常用做尸体浸泡的是
【简答题】What is the most common form. of first contact between two people? In many cultures the most common form. of first contact between two people is a ______ .
【简答题】W ____ your help, I couldn’t have passed the exam.
【单选题】听力原文:W: I need your help, John, I feel very nervous whenever speaking in the presence of many strangers. Do you know how to overcome this? M: Me too. Take it easy. I consider it a natural human respon...
A.
She should follow the human nature.
B.
Strangers are nothing to be afraid of.
C.
Feeling nervous is nothing improper.
D.
She should accept strangers' presents naturally.
【单选题】I can't thank you _______ much because without your help I _______ have won the first prize.