（）是分销渠道选择的重要标准之一。 ["经济标准","产品标准","技术标准","生产标准"]
Which of the following may cause that an engine doesnt turn on starting air?（） ["too low starting air pressure","main starting valve closed","neither A nor B","A and B"]
负荷试验时，功率因数为0.7，要调整到0.8，只要（）即可。 ["盐水缸电流调小","盐水缸电流调大","电抗电流调大","电抗电流调小"]
变压器设置位置宜靠近（）。 ["高压开关柜","低压配电设备","柴油发电机组","蓄电池组"]
顾客居住的集中程度形成了市场的集中度，市场的聚集度也会直接影响（） ["渠道的长短","渠道的长度","渠道的宽度","广度"]
全民单位自管公房
