考核管井穿放指标时，一个管井至少要穿多少条光缆才算是合格的（）。
A.1
B.2
C.3
D.4
参考答案：B
读一读，补全对话。
Jenny: I'm excited!
Li Ming: Me, too! I ____________ going on ____________!
Danny: I'm ____________ too! Trains are ____________ ____________.
Beijing is ____________ ____________ ! Come ____________, Jenny and Li Ming!
Let's ____________, ____________ and ____________!
Mrs. Li : Danny! Please ____________ run! Please don't ____________! Please don't ____________!
Danny: Yes, Mrs. Li. I'm ____________.
Mrs. Li: That's ____________, Danny. Please sit ____________.
航行港澳的小型船舶的经营单位应在每年3月31日前向原登记注册海关提交下列哪些办理年审手续( )
A．年审报告书
B．注册证书
C．船舶国籍证书
D．海关监管簿
