【单选题】脊柱中央有椎孔连成的椎管,椎管内有( )存在。
【单选题】Mary______as Linda.
A.
doesn't work so efficiently
B.
works not so efficiently
C.
doesn't work more efficiently
D.
works less efficiently
【判断题】刘常勇的创业评价由为回报评价和市场评价两部分组成。
【单选题】This machine _____. It hasn't worked for years. [ ]
【判断题】将内部牵制制度、内部控制制度、内部会计监督制度和内部稽核制度,按照涉及业务范围从大到小顺序排列,应该是内部控制制度、内部会计监督制度、内部牵制制度、内部稽核制度。
【单选题】My computer______. [ ]
【单选题】This machine _________, it has worked for years. [ ]
【单选题】—Will you give this bag to Mr.Li? —Sorry,I can't. He________.
A.
doesn't any more work here
B.
doesn't any longer here work
C.
doesn't work any more here
D.
doesn't work here any longer
【单选题】脊柱中央有椎孔连成的椎管,椎管内有( )存在。
【判断题】如果电源的开路电压为60V,短路电流为2A,则负载从该电源获得的最大功率为30W。