I like that music, but the lyrics good enough. [ ]
A. aren't
B. are
C. isn't .
D. is
答案:A
锅炉压力表指示pg=0.98MPa,当地大气压为Pb=0.1Mpa,求锅炉内蒸汽绝对压力。
美容师要在顾客()时,才可以下订单。
A.付款
B.离开
C.做护理
D.没有任何问题