冶金铸造起重机的起升机构采用行星减速器时,两套传动装置中的一套电机发生故障时,另一套传动装置()。
A.不能安全运行
B.能安全运行一个吊运周期
C.能长期安全运行
参考答案:C
亡阳证的典型舌脉是( )
A.舌淡胖嫩,脉沉迟B.舌淡白,脉虚细C.舌淡胖嫩,脉虚细D.舌淡向,脉沉迟无力E.舌淡白苔白润,脉微欲绝
Project manager believes that modifying the project scope may provide added value for the customer. The project manager should()
A.change the scope baseline
B.contact the customer to determine if the change adds value
C.call a meeting of the change control board
D.change the project's objectives