【单选题】他励电动机,PN = 18 kW,UN = 220 V,IN = 94 A,nN = 1000 r/m,Ra = 0.15 Ω,则βN应为[ ]。
【单选题】The endpoints (horizontal and vertical intercepts) of the budget line:
B.
measure the rate at which one good can be substituted for another.
C.
measure the rate at which a consumer is willing to trade one good for another.
D.
represent the quantity of each good that could be purchased if all of the budget were allocated to that good.
【单选题】盐引是中国古代盐铁官营制度的产物,它兼具“债”与“仓单”的所有性质与相关的“交易”特征,是历史悠久的“复杂货币”。明初规定:商人要获得盐引,需运粮到北方边疆,以粮换“引”,凭“引”到指定盐场支取食盐,再到指定的地区销售。明代这种政策引发了()
【单选题】For Aristotle, the two endpoints (excess and deficiency) related to the mean are
【简答题】建设工程定额是指在工程建设中,单位合格产品所需人工、材料、机械的规定额度,它属于[填空(1)] 定额的性质。
【单选题】The original endpoints of Orient Express are ______.
【单选题】The coordinates of the endpoints of CD, in the standard (x,y) coordinate plane, are (-4,-2) and (14,2).What is the x-coordinate of the midpoint of CD?
【多选题】国内订单融资金额应根据购销双方的资信状况、购销合作关系的稳定性,销货方的预收货款比例及履约备货能力,购货方的采购规模、到期足额支付货款的可能性等因素合理确定,原则上为订单净额的(),最高不得超过()。订单净额指订单金额扣除预付款、质保金及其它买方延后支付的款项。
【单选题】多重比较有多种方法,我们所学的最小显著差数法的英文缩写为( )。