企业维持原有地位，以现有的不变的产品和市场防御竞争者的攻击，这种市场防御策略是（）。 ["阵地防御","侧翼防御","运动防御","收缩防御"]
The space in No.1 lower hold is nearly full up but there is still some（）side. ["cabin","cabins","room","room"]
企业通过治理薄弱环节来防御竞争者乘虚而入，或建立一些次要业务作为防御的前沿阵地，这种市场防御策略是（）。 ["阵地防御","侧翼防御","运动防御","收缩防御"]
The tally figures of the loading port are in conformity（）ours. ["to","by","with","against"]
X射线和紫外线波长要短于其他可见光。
如果静脉注射吸毒人员与他人共用注射器，可能导致什后果？
