【单选题】We’ll our homework to our teacher email.
【单选题】设a='计算机等级考试',结果为'考试'的表达式是( )。
【简答题】2kV= V ,610mV= V,1mV= μV= V
【单选题】——Alice looks sad. Did you tell her about the accident? ——Yes, but I ______ her just before her final examinations.
【判断题】严禁将食品、餐具带进实验室,但可以将无害的化学试剂带出实验室。
【单选题】It is known that water is not ______ endless resource, nor ______ that can be made once more. [ ]
【判断题】电网的形状一般以“Y”字型为主。高度不低于1m,电压控制在1000V—10000V之间。
【单选题】交流电梯额定速度不超过1m/s时,渐进行安全钳动作速度V应()M/S。
【单选题】The right thing about the left atrium is ()
C.
It is the entrance of pulmonary vein
D.
It is located in the left posterior part of heart base
E.
all of the above are right
【简答题】2kV= A,610mV= V,1mV= μV= V