长度150m及以上时，宜隔每400m（直供方式）或800m（AT供电方式）划分区段且在每个区段应实施接地绝缘分隔。电缆终端一端铠装层、屏蔽层直接接地，另一端铠装层、屏蔽层通过护层保护器分开接地（）

B．1000m

C．800m

D．400m

此题为判断题(对，错)。

A．At 1 p.m.

B．At 2 p.m.

C．At 3 p.m.

D．At 4 p.m.

A．At 7 p.m.

B．At 8 p.m.

C．At 9 p.m.

D．At 10 p.m.

A．At 1 p. m. tomorrow.

B．At 2 p. m. today.

C．At 3 p. m. tomorrow.

D．At 4 p. m. today.

A．At 1 p. m. tomorrow.

B．At 2 p. m. today.

C．At 3 p. m. tomorrow.

D．At 4 p. m. today.

A．At 2:15 a. m.

B．At 1:30 a. m.

C．At 1:40 a. m.

D．At 2:30 a. m.

A．At 5 p.m.

B．At 6 p.m.

C．At 8 p.m.

D．At 9 p.m.

A．at 8:00 A. M. , Tuesday

B．at 4:00 P. M. , Wednesday

C．at 8:15 A. M. , Thursday

D．at 7:30 A. M. , Wednesday

A．At 12:00 p.m.

B．At 1:30 p.m.

C．At 12:30 p.m.

D．At 1:30 a.m.