【单选题】设已定义x为double类型变量 x=213.82631; printf("%-6.2e\n",x); 则以上语句( )。
【单选题】采用()时,螺栓直径为d,平垫圈外径为2.2d,内径为1.1d,厚度为0.15d。
【单选题】下面不属于人员推销的特点的是 ( ) 。
【单选题】采用( )时,螺栓直径为d,平垫圈外径为2.2d,内径为1.1d,厚度为0.15d。
【单选题】设已定义x为double类型变量 x=213.82631; printf("%-6.2en",x); 则以上语句( )。
【单选题】In the early days of the United States, postal charges were paid by the recipients, and charges varied with the distance carried. In 1825, the United States Congress permitted local postmasters to giv...
A.
The increase of private mail service.
B.
A comparison of urban and rural postal services.
C.
The development of government postal system.
D.
The history of postage stamps.
【简答题】采用 画法时,螺栓直径为d,平垫圈外径为2.2d,内径为1.1d,厚度为0.15d。A. 比例