A. heart
B. mind
C. head
D. decision
第1题:
A.间隔20秒后,buy( )函数被调用一次
B.间隔20分钟后,buy( )函数被调用一次
C.间隔20毫秒后,buy( )函数被调用一次
D.buy( )函数被持续调用20次
第2题:
You are signing on a deck officer,who will be designated as one of the GMDSS operators,before sailing foreign.Which statement is TRUE ________.
A.He/she must have an STCW certificate endorsed as“Valid for Service on Vessels Operating in the GMDSS System”
B.He/she must present either an FCC-issued license or a Coast Guard-issued license
C.You must consult the“List of Qualifications”on the reverse of his/her FCC-issued license
D.His/her Merchant Mariners Document must have an added endorsement as “Radio Electronics Officer”
第3题:
第4题:
5.We can______ books _______bookstore(书店).
A. sell ;to
B. buy ;from
C. sell ;from
D. buy ;to
第5题:
第6题: