炸药的（）是指炸药从空气吸收水分的能力。

与进出口活动直接有关的企业、单位应当依照有关法律、行政法规规定的保管期限，保管会计账簿、会计凭证、会计报表和其他会计资料。报关单证、进出口单证、合同以及与进出口业务直接有关的其他资料，应当自进出口货物放行之日起保管3年。 ( )

在工资数据表中，显示职称为工程师且基本工资大于2000的记录，下列语句正确的是

A．DISPLAY FOR职称="工程师"OR基本工资＞2000

B．DISPLAY FOR职称="工程师"AND基本工资＞2000

C．DISPLAY FOR职称="工程师"基本工资＞2000

D．LIST ALL FOR职称="工程师"，基本工资＞2000

马尾由多少对神经根组成（）。

A.8

B.9

C.10

D.11

E.12

坐骨神经的损伤对下肢功能影响较大，以下对坐骨神经损伤的描述，错误的是（）

A.如损伤部位在坐骨大孔处或坐骨结节以上，则股后肌群，小腿前、外、后肌群及足部肌肉全部瘫痪

B.如在股部中下段损伤，只表现为膝以下肌肉瘫痪，膝以上肌肉无影响

C.如为其分支损伤，则腓总神经损伤引起的瘫痪重，胫神经损伤引起的瘫痪轻

D.膝以下除小腿内侧及内踝处隐神经供给区外，感觉均消失

E.往往有严重的营养障碍，足底部形成溃疡

If you left your book on the table overnight, you would find the following morning that it was still exactly where you had left it, provided nobody had moved it. If a ball is made to roll on a very smooth surface, it will roll a long distance unless something stops it or changes its direction. This tendency of an object to remain at rest unless something moves it and to continue moving unless something stops it is known as the Law of Inertia.
The following examples show the truth of this law.
a. Put a table-cloth on a table and arrange a pile of books on it. Hold one edge of the table-cloth and pull it quickly. The table-cloth will come off, leaving the pile of books undisturbed.
b. Place a small piece of cardboard on an open jar and place a coin on it directly over its mouth. Use one finger to flick the piece of cardboard away. You will notice that the coin drops into the jar.
c. Sitting in a car which starts suddenly, you feel you are jerked backwards. In fact, you are not jerked backwards. Your lower half, which is in contact with the cushion, is forced to move forward with the car, and the upper part of your body, which remained at rest, is left behind.

Sitting in a car which stops suddenly, you feel that you are ______

A. at rest
B. left behind
C. jerked forward
D. jerked backwards