【单选题】If two theories are equal (to) their ability to account (for) a body of data, the theory that (does so) with the smaller number of assumptions is (to be preferred).
【单选题】Why are tourists asked not to feed the ponies?
A.
To protect the tourists from being bitten
B.
To keep the ponies off the petrol station
C.
To avoid putting the ponies in danger
D.
To prevent the ponies from fighting
【单选题】Two ponies of equal mass are initially at diametrically opposite points on the rim of a large horizontal turntable that is turning freely on a frictionless, vertical axle through its center. The ponie...
【单选题】简单加密支付系统模型的工作流程包含以下几项: 1.用户在银行开立信用卡账户,获得信用卡号; 2.业务服务器验证商家身份,将用户加密的信用卡信息转移到安全地方解密,然后将用户信用卡信息通过安全专用网传给商家银行; 3.商家银行通过普通电子通道与用户信用卡发生联系,确认信用卡信息的有效性,并将证实后的结果传送给业务服务器; 4.商家服务器验证接收到信息的有效性和完整性后,将用户加密的信用卡信息传给业务...
【单选题】The operation of paralleling two alternators requires( ) to be equal and also in phase
【单选题】要求将电压信号转换成与之成稳定关系的电流信号,应引入( )。
【单选题】The operation of _______two alternators requires the voltages to be equal and also in phase