起重机的运行机构驱动分为()驱动和()驱动2种形式。
参考答案:集中;分别
普通摄影应用管电压为()
A.25~40kV
B.40~100kV
C.100~110kV
D.120~150kV
E.200kV以上
We ______ the quality of your new products.
A.satisfyB.agreed withC.agreed upon D.agree to