女性，65岁。间歇性进食哽噎，胸骨后憋胀，伴消瘦2年。食管吞钡造影见食管贲门呈"鸟嘴

旅客应在航空公司规定的时限内到达机场，凭（）按时办理客票查验，托运行李，（）等乘机手续。

According to the passage, which of the following is true

A．Americans have always believed that military might is correct.

B．Americans have dropped diplomatic solutions to political problems since Bush took office.

C．Americans have accused France of being ungrateful for its help.

D．Bush was thought by some to be seeking justification in attacking Iran in his address.

语句PrintAbs（6^2）+Int（-3.6^2）的输出结果是（）

A.-36

B.1

C.-1

D.23

PVA一段干燥机电动机采用145A交流接触器，此145A指的是（）。

A、主触点的额定电流

B、辅助触点的额定电流

C、负载短路时通过主触点的电流

D、主触点控制受电设备的工作电流

如何对组织发展进行有效管理？