ZXDU300V3.0 CSU包含以下（）单板。A、RLY板 B、CVT板 C、PMS板

21世纪是一个品牌竞争的时代。

饮酒后驾驶机动车的，处暂扣一个月以上三个月以下机动车驾驶证，并处二百元以上五百元以下罚款。

关于神经影像学检查，下列哪项表达不正确（）。

A.头颅和脊柱X线平片敏感性较差，已被逐渐淘汰

B.MRI对任何疾病的诊断优于CT

C.DSA检查可发现脑部动脉瘤和血管畸形

D.脊髓血管造影可诊断脊髓血管畸形和动静脉瘘

E.脊髓造影的主要适应证是脊髓压迫症

MIDI enables people to use (11) computers and electronic musical instruments. There are actually three components to MIDI, the communications" (12) .", the Hardware Interface and a distribution (13) called "Standard MIDI Files". In the context of the WWW, the most interesting component is the (14) Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol (15) are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.

（13）是（）

A.format

B.text

C.wave

D.center

（）安全阀是利用弹簧压缩的弹力来平衡气体作用在阀芯上的力。