Sos属于（） A: 接头蛋白（adaptor） B: Ras的鸟苷酸交换因子（GEF） C: Ras的GTP酶活化蛋白（GAP）

Which of the following is NOT TRUE about packing A: You’’ll have to pay extra if your luggage is overweight. B: Liquid such as aerosol sprays are not allowed to be put in your case. C: Sharp objects like scissors are not allowed to be packed in your luggage. D: It’’s advisable to take with you an all-purpose adaptor and light traveling iron.

内吞泡的形成需要( )。[br][/br][br][/br] A: 细胞质膜中有受体,并且细胞外基质中存在与膜受体特异结合的配体 B: 街接蛋白（adaptor protein) C: 网格蛋白(clathrin) D: 发动蛋白(dynamin) E: 需要上述条件都存在

在轮胎充气活门上安装轮胎充气适配头和压力表。 A: Install the tire inflating valve and pressure gauge upstream of the tire inflating adapter. B: The tire inflation valve and pressure gauge are respectively installed at both ends of the tire inflation adapter head. C: Installthe tire inflation adaptor and pressure gage on the tire inflation valve.

A technician receives a laptop that is running out of battery power more quickly than expected.Which of the following can the technician do to correct the problem？ （） A: Note on the work order that the laptop is losing battery capabilities and the laptop must bereplaced. B: Replace the battery by purchasing a new battery from the manufacturer. C: Stop using the battery and use alternating current （AC） power for the laptop. D: Replace the AC adaptor by purchasing a new adapter from the manufacturer.