截平面与圆锥轴线垂直，则截交线的形状为（）。A、相交直线 B、圆 C、抛物线 D、椭

患儿男，3个月。因"发热、气促3天、加重1天"入院。3天前无明显诱因下，发热39.6℃，伴轻咳，气促，唇周发绀，无寒战，无抽搐。曾在外院予青霉素，头孢噻肟钠抗感染等治疗。昨天热稍退，但气促发绀明显加重，伴呼气性呻吟。起病以来，精神困倦，烦躁，睡眠差，胃纳差，间有腹胀，无呕吐，大便稀黄，1～2次／日，量少，无脓血黏液，尿少。查体：T38℃，P200次／分，R60次／分，BP9／5kPa，体重4.5kg，神清，烦躁不安，颜面唇周发绀，前囟1.5cm×1.5cm，平软，气管稍偏右，呼气性呻吟，鼻翼扇动，三凹征（+），左侧胸廓较膨隆，左侧哭颤减弱，叩诊鼓音，左侧呼吸音明显减弱，右侧呼吸音粗，较多细小湿啰音，心率200次／分，律齐，第一心音低钝，未闻杂音，腹稍胀，肝增大至右肋下4cm，质中，脾未触及。个人史：足月，在家产，混合喂养，未预防接种。

具有以下哪几项可诊断为心力衰竭（）。

A.心率突然＞180次／分

B.心音低钝，奔马律，颈静脉怒张

C.尿少或无尿，颜面眼睑或双下肢水肿

D.肝脏进行性增大

E.呼吸突然＞60次／分

F.突然烦躁不安，明显发绀，面色苍白或发灰

In theory, the Habbendorf rotary engine could be a great racing engine, but in practice, it is not. The reason is that the available fuels do not have sufficient octane to obtain maximum performance from the engine.
The answer to which of the following questions would be most relevant to evaluating the adequacy of the explanation given above for why the Habbendorf rotary engine is not a great racing engine ？（）

A. If the Habbendorf rotary engine were to operate at maximum performance levels, how would its performance compare to that of an engine recognized as a great racing engine

B. At what level of octane in its fuel does the Habbendorf rotary engine achieve maximum performance

C. What levels of speed, acceleration, and efficiency must an engine display in order to be considered a "great racing engine"

D. Could a Habbendorf rotary engine be modified so that it is able to achieve maximum performance with the fuels currently available

E. If a car equipped with a Habbendoff rotary engine were to race against a comparable car equipped with a great racing engine, by how much would the performance of the great racing engine surpass that of the Habbendorf rotary engine

根据我国法律的习惯，《会计法》适用于中华人民共和国境内，包括已回归祖国的香港、澳门地区。

申请人隐瞒有关情况或者提供虚假材料的，食品药品监督管理部门发现后（）

A、不予受理或者不予许可

B、给予警告

C、罚款2000元人民币

D、该申请人在1年内不得再次申请餐饮服务许可。

下列关于中国近代史上的一些重大事件，表述正确的是______。

A．新文化运动兴起的标志是《新青年》杂志的出版
B．一二·九运动是中共领导反对内战的学生爱国运动
C．新三民主义是第二次国共合作的政治思想基础
D．秋收起义是中共独立领导武装斗争的开始