【单选题】一对齿轮要正确啮合,它们的_______必须相等,
【简答题】The story is about a young student.She worked very hard at her lessons.She worked so hard that she became ill.She couldn't go to sleep at night.But when she got up the next morning, she felt very tire...
【单选题】______, she failed again in the test and felt very depressed.
【多选题】以下对车船税的理解正确的有( )。
B.
车船的所有人或者管理人未缴纳车船税的,使用人应当代为缴纳车船税
C.
从事机动车交通事故责任强制保险业务的保险机构为机动车车船税的扣缴义务人,应当依法代收代缴车船税
D.
对于纳税人在购买“交强险”截止日期以后购买“交强险”的,保险机构在代收代缴税款的同时,还应代收代缴欠缴税款的滞纳金
E.
纳税人对扣缴义务人代收代缴税款有异议的,可以向纳税所在地的主管地方税务机关提出
【单选题】下列有关脂肪酸氧化的叙述中哪项是错误的()
C.
在β-碳上进行脱氧、加水、再脱氧,并在α-β碳之间断裂