船舶采用锚的重最是根据（）估算的。 A.锚链直径 B.船长 C.链长 D.船的排水量

对下列句子的朗读节奏划分不正确的一项是（   ）

A．水/不在深，有仙/则灵

B．谈笑/有鸿儒，往来/无白丁

C．中通外/直，不蔓不/枝

D．南阳/诸葛庐

Ⅰ类救生艇、筏应配备手持红光火焰为（）

A、4支

B、5支

C、6支

His initial broadcasting success as a young man was due at least as much to his considerable professional ------- as it was to his father's broadcasting connections.

A．(A) aplomb

B．(B) uncertainty

C．(C) hubris

D．(D) seniority

E．(E) nepotism

下列属于化学变化的是

A．灯泡通电正常发光

B．石油的分馏

C．煤的干馏

D．海水晒盐