【单选题】Teenagers always (long for) the time (which) they (are able) to be (independent).
【单选题】Which of the following statements is true?
A.
All vessels should carry at least one SART.
B.
SART should be stowed as high as possible according to the SOLAS Convention.
C.
SART can be mounted either on the compass deck or in the survival craft.
D.
SART can be fixed on a mother ship and a lifeboat, but it cannot be fixed on a life craft.
【单选题】Why did the author become a writer?
A.
Partly because he had a father.
B.
Partly because of his father’s influence.
C.
Partly because his father was familiar with world writers.
D.
Partly because his father knew some great religious leaders.
【单选题】according to the author, why did the author become a children's doctor?
A.
because he wanted to be involved in animal research.
B.
because he saw many poor children die of cancer.
C.
because he loved children and wanted to keep them healthy.
D.
because he wanted to do organ transplantation from animals to children.
【单选题】如图所示采暖系统施工图,每组散热器上安装一个手动放风阀,则该系统自动排气阀规格为DN()。