利用后倒缆首离码头应()。
A、内舷舵倒车
B、外舷舵倒车
C、正舵
D、正舵倒车
参考答案:A
Sam and Jessica are invited to a dance. If there are 7 men and 7women in total at the dance, and one woman and one man are chosen to lead the dance, what is the probability that Sam and Jessica will NOT be chosen to lead the dance ?()
A.A
B.B
C.C
D.D
E.E
生理情况下,衰老的中性粒细胞主要破坏场所为()。
A.肝脏
B.肾脏
C.血液
D.消化道
E.单核一吞噬细胞系统