【判断题】收入费用类账户一般无期末余额,但有期初余额
【单选题】回转体动平面如图 a 所示,沿 Y 轴回转得到的轴测图是:
【单选题】My mother has worked in this factory _____2 years.
【判断题】一个0.25W,100欧的金属膜电阻,可以接在50V电源上
【判断题】曲轴箱强制通风系统的作用:利用发动机进气系统的抽吸作用抽吸曲轴箱内的气体,这种通风方式叫做强制通风
【单选题】The message the author wishes to convey in the passage is that _____.
A.
humans will become extinct if continue to destroy the nature
B.
man has to limit his activities to slow down environmental pollution
C.
human will continue to develop in spite of the changes of nature
D.
maintaining human life is a tough question but still can be solved
【单选题】My mother has worked in this factory _____2 years.