_________ is a bond secured by a mortgage on one or more assets.
A convertible bond
B. A treasury bond
C. A mortgage bond
D. A municipal bond
下颌9个标志点中,不正确的是
A. 颏上点
B. 颏顶点
C. 下切牙根尖点
D. 下齿槽缘点
Chinese college students may be more__________ whereas American students may go to college more for the experience
A. knowledge-seeking
B. determined
C. relaxed
D. goal-oriented
下面关于第一台电子计算机的叙述哪些是正确的?
A. 使用的电子元件是电子管
B. 体积庞大占地170平方米
C. 每秒进行5000次十位数加减法
D. 电子管容易损坏