锐器收集盒评判标准是()制定。
A.ANS
B.CNS
C.NIOSH
D.NOSHI
E.JNS
参考答案:C
To some life is pleasure, while to _____ it is suffering. But I don’t know what it is to me.
A.ones
B.others
C.the others
D.those
在不考虑压强的影响时,水的粘滞性随温度升高而(),空气的粘滞性随温度升高而()。
A、增大、减小
B、增大、增大
C、减小、减小
D、减小、增大