水痘的传染源是（） A.患者 B.无症状携带者 C.带状疱疹患者和水痘患者，且前者的

Which of the following most accurately describes the generational effects of fiscal policy（）

A. Fiscal stimulus generates economic activity greater than the amount of the stimulus due to the multiplier effect on future generations.

B. Each generation of fiscal policy decisions has unintended effects that require another generation of fiscal policy actions to correct them.

C. Fiscal imbalances must be corrected in the future by increasing taxes or decreasing government spending, and much of the burden will fall on future generations.

赤石脂的功效

A．涩肠止泻

B．止血

C．外用收湿敛疮生肌

D．生津安蛔

E．止带

槐花散的主治证是

A．风热湿毒壅滞肠道，损伤血络

B．脾阳不足，脾不统血

C．热结下焦

D．血热妄行

E．以上都不是

原发性支气管肺癌早期最常见的表现是（）。

A.刺激性咳嗽

B.顽固性胸痛

C.声音嘶哑

D.锁骨上淋巴结肿大

E.霍纳（horner）综合征

加油机显示板在提枪或放枪时有跳数现象，引发此故障的可能原因是（）。

A、止回阀弹簧弹力过弱

B、单光电板损坏

C、接线板上+12V、+5V电源电压偏低

D、泵内刮片、弹片磨损，断裂