当某商品的需求增加、供给减少时，会导致（）A、均衡价格下降，均衡产销量减少 B、均衡价

作出正确判断，找出全部都是生物的一项 [ ]

A．太阳、岩石、空气

B．煤炭、石油、天然气

C．金鱼藻、鲤鱼、河蚌

D．紫菜、牡蛎、鹅卵石

瘾疹

A． * * 口常有精液溢出
B．排尿困难、尿潴留
C．阴囊肿大偏坠，但无红热，透光试验(+)
D．阴茎背侧触及硬结或索状斑块
E．射精时精液呈淡红色或棕色

12岁女孩，发热、双膝关节疼痛3周，自觉乏力、心悸、胸闷气促1周。查体：消瘦，面色苍白，双肺呼吸音清，心率124次／分，第一心音低钝，心尖区可闻及3／6级吹风样收缩期杂音，肝右肋缘下2.5cm，有触痛，足背及内踝轻度水肿。心电图P-R间期0.20秒，红细胞沉降率15mm／h，末梢血WBC16×10⁹／L。

该患儿最可能的诊断是（）

A.急性风湿热、心肌炎

B.急性风湿热、心肌炎合并充血性心力衰竭

C.病毒性心肌炎合并心力衰竭

D.C急性风湿热合并肾衰竭

E.幼年类风湿性关节炎合并心包炎

You have taken information on project scope and resources and then developed durations for input to schedules. Since there was very limited information about the project, you used actual duration of a previous, similar activity as the basis for estimating future activity. What will be a next step after this activity

A．Using diagramming techniques like GERT and systems dynamic

B．Calculating theoretical early and late start and finish dates for all project activitie

C．Using standardized networks to expedite preparation of project network diagram

D．Subdividing project work packages into smaller more manageable components for better management contro

在打印非正式文稿时，可将标准打印模式改为草稿打印模式的好处是（）。

A．省墨30%以上

B．可提高打印速度

C．可节约电能

D．打印效果好