下图甲表示某种植物光合作用强度与光照强度的关系,图乙表示该植物叶肉细胞的部分结构(图中M和N代表两种气体)。据图判断,下列说法正确的是(注:不考虑无氧呼吸)()
A. 甲图中的纵坐标数值即为乙图中的m
B. 在甲图中的a点时,乙图中不存在的过程是m、m、n、n
C. 在甲图中c点时,乙图中不存在的过程是m、m、n、n
D. 甲图中e点以后,乙图中n不再增加,其主要原因是m值太低
查看答案
Whenstartingareciprocatingpump,theinletvalveshouldbe().
A. closed
B. openedfully
C. crackedopen
D. partlyopen
OutlookExprEss收到一封中文邮件,显示的是乱码,应怎么做?()
A. 重装OutlookExprEss
B. 重装系统
C. 安装多语言包
D. 单击“查看”菜单中“编码”子菜单中的“简体中文”
ForthepurposeoftheRules,exceptwhereotherwiserequired,theterm().
A. vesselincludesseaplanes
B. seaplaneincludesnon-displacementcraft
C. vesselengagedinfishingincludesavesselfishingwithtrollinglines
D. vesselrestrictedinherabilitytomaneuverincludesfishingvessels
Howarerivetedlapjointsmadewatertight?()
A. Thefayingsurfacesarecoatedwithwhitelead(orsimilarproduct)beforetherivetsareset
B. Asealingweldbeadof1/8orlesspitchisrunalongtheplateedge
C. Theplateedgeissplitclosetoanadjacentplateandmechanicallyforcedintocontactwiththeadjacentplate
D. Aproperlyrivetedjointwillbewatertight;anyleakageisstoppedbysettingupontherivets