皮皮学，免费搜题
登录
搜题
【简答题】
节能产品认证是指什么?
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】运行下面程序，若从键盘输入字母“b”，则输出结果是 char c； c=getchar()； if(c＞='a'&&c＜='u')c=c+4； else if(c＞='v'&&c＜='z')c=c-21； else printf('input error!/n')； putchar(c)；
A.
g
B.
w
C.
f
D.
d
【单选题】运行下面程序,若从键盘输入字母b,则输出结果是() int main() { char c; c=getchar(); if(c>=a'&&c='v'&&c<='z') c=c-21; else printf("input error!\n"); putchar(c); }
A.
g
B.
w
C.
f
D.
d
【单选题】运行下面程序,若从键盘输入字母b,则输出结果是( ). #include main( ) { char c; c=getchar( ); if(c>='a'&&c='v'&&c<='z') c=c-21; else printf("input error!\n"); putchar(c); }
A.
g
B.
w
C.
f
D.
d
【简答题】正确、合理地使用机械 , 可以减轻机械的 , 较长时间内保持机械应有的性能和 。
【单选题】According to a recent American study, people start losing their mental ability______.
A.
in their early teens
B.
in their mid-sixties
C.
in their mid-twenties
D.
in their early thirties
【单选题】It is not easy for a great star to _____ when losing his ability of taking care of himself. [ ]
A.
pull through
B.
let out
C.
wake up
D.
take up
【简答题】Directions: Fill in the blanks with the following words:enthusiasmresolutionsuccessvaluesecretSuccess is the ability to go from failure to failure without losing your___________.
【单选题】The process of gaining or losing weight can be explained by comparing your body to your car. Both run 【B1】______ fuel, food for your body and gasoline for your car. Both 【B2】______ that fuel, first in...
A.
in
B.
on
C.
for
D.
against
相关题目：