【单选题】下列军事高技术不属于支撑武器装备发展的基础技术的是( )。
【判断题】材料抵抗另外物体对它的压入的能力,称为强度。
【单选题】Listen to a short passage and choose the best answer to each question you hear.
A.
Because black cats look like witches.
B.
Because black cats were thought to be witches.
C.
Because black cats bring seven years of bad luck.
D.
Because black cats are hard to notice in darkness.
【单选题】Listen to a short conversation and choose the best answer to each question you hear.
A.
He will apologize to his roommate.
B.
He will give the bicycle back right now.
C.
He will give a call to the woman tonight.
D.
He will play computer games with his roommate.
【判断题】金属材料抵抗冲击载荷而不破坏的能力称为强度。
【简答题】反映材料抵抗破坏的强度能力称为材料的()