How should you signal the crane operator to stop?（）. ["Place both fists in front of the body with the thumbs pointing outward","With both arms extended out and palms to down, move arms back and forth","Extend arm with the palm down and and hold this position rigidly","Clasp hands in front of you body"]
实验研究方法是指从问题出发，在相关的（）上或前提假设下进行有计划的验证，从而得出一定的科学结论的方法。 ["假设","理论基础","已有成果","研究方法"]
我国将加快百万千瓦级风电场的建设，同时建设河西走廊、沿海和内蒙古三个千万千瓦级风电基地。打造“风电三峡”，分析我国的风能资源位居世界第一，但目前风电装机容量远落后于德国。原因不包括（） ["我国电力充足对风电需求量小","我国经济基础薄弱风电技术水平低","我国风电成本高市场竞争力小","我国政府对风电建设的扶持力度不够"]
营销道德策划
How should you signal the crane operator to swing?（）. ["With both arms extended out and palms to down, move arms back and forth","With arm ertended downwards and forefinger pointing down,move hand in small horizontal crecles","Extend arm and point finger in the direction to move boom","Place both fists in front of the body with the thumbs pointing outward"]
企业面临哪四种竞争者？
