【单选题】根据草图的尺寸标注,可将草图分为欠定义、完全定义和过定义3种状态,草图以黑色显示时,说明草图为( )
【判断题】张先《醉垂鞭》:“昨日乱山昏,来时衣上云。”化用唐·李白《清平调》“云想衣裳花想容”诗意。()
【多选题】发酵过程已经实现在线测量和控制的参数有( )
【单选题】“云想衣裳花想容”诗句是李白为赞美()而作?
【判断题】记账凭证根据复式记账法的基本原理,确定了应借、应贷的会计科目及其金额,将原始凭证中的数据转化为会计语言。因此,记账凭证是介于原始凭证与账簿之间的中间环节,是登记明细分类账户和总分类账户的依据。
【简答题】硝酸甘油舒张血管的机制是存平滑肌细胞和血管内皮细胞产生______,在血管平滑肌细胞中激活______,增加细胞内______含量,降低胞质中______浓度而松弛平滑肌。
【单选题】The assumption that the tropical ecosystem of Amazonia has been created solely by natural forces ______.
A.
has often been questioned by ecologists in the past.
B.
has been shown to be incorrect by recent research.
C.
was made by Peter Feinsinger and other ecologists.
D.
has led to some fruitful discoveries.