正常照明电源应设单独线路或专用变压器进行供电。
参考答案：错
The number of the students in our school ________ about 3000 and ______ them study hard.
A．is, a large amount of
B．are, a number of
C．are, large amount of
D．is, a large number of
商业银行的经营是对其开展的各种业务活动的（）
A.组织和控制
B.调整与监督
C.组织和营销
D.计划与组织
