管线用水作介质进行严密性试验时,试验压力为(),但最低不少于0.2MPa。
A.1.5倍设计压力
B.1.0倍工作压力
C.1.5倍工作压力
参考答案:B
Kate is my good 1 . She is 2 Canada. She is eleven 3 old. She has a round 4 , big blue eyes and a small 5 . She 6 tall. She 7 long hair. She is 8 a purple skirt. Her sister is a 9 . She teaches(教) English. They are in 10 now. They like China.
( )1. A. friends B. friend C. father
( )2. A. in B. from C. on
( )3. A. years B.year’s C. years’
( )4. A. eyes B. ears C. face
( ) 5.A. mouth B. ears C. arm
( )6. A. am B. is C. are
( )7. A. have B. is C. has
( )8. A. on B. in C. with
( )9. A. teacher B. doctor C. student
( )10. A. Canada B. China C. Japan
为预防结核传播,下列哪项最重要()。
A.出生后定期接种卡介苗
B.注意保护环境卫生
C.隔离并治愈排菌患者
D.避免与患者接触
E.注意饮食卫生